Originally Posted by kaligaran
Based on previous posts I can see you feel strongly about this but really aren't contributing anything constructive in this thread. Perhaps you should post up your GHB and BoB pics/lists/weights and let's talk in a constructive manner about it.
In this thread there are lots of little backpacks that weigh around 10# give or take. Sure there's lots of crossover between items in a BoB or GHB, a container, lighter, IFAK, etc is just common sense.
Some people have multiple day trips to get home and/or small children which is an issue if they can't drive for whatever reason.
If someone isn't mobile with a 10# pack, that's a physical limitation issue due to another factor perhaps as simple as being grossly out of shape.
I'll comment here. This is my own personal opinion, YMMV.
For most people, the difference between "getting home" vs. "bugging out" boils down to two factors - destination and duration.
A GHB is intended to get you by for a short period of time where you may not have access to usual infrastructure support or transportation, but you have a known destination (your home) and ideally a short trip between you and home (commonly a few hours or 1-3 days max).
A BOB is when you are leaving wherever it is you start from, and are looking to get to some unknown destination where things are hopefully better or more conducive to your health and welfare. Since you may not know where that place is, you may have no idea how long it will take you to get there... and in fact, you may NEVER get there in the sense that you may have to lead a migratory/nomadic existence for a while.
Because of that crucial distinction, a GHB does not need the depth and comprehensiveness of a BOB. Because it assumes you will have the bulk of what you need at home (to weather an extended situation) it can afford to be light and fast. You won't need a tent or a very involved medical kit. You will not need pots and pans, sleeping bag, etc. With a pack that anticipates you may be on the go over a period ranging from days to weeks or perhaps multiple months, you're not going to be able to get by - or at least, you will have a very rough go of things if you are without a lot of stuff that just wouldn't be justifiable for a GHB in terms of weight and bulk.
Here's an example. Let's say the individual (let's call him Joe) works in a city that is a 90 minute commute from his home (on a good traffic day). For whatever reason, one day while Joe is at work, something happens. This something has two effects - it makes it untenable for Joe to stay in the city, and it denies Joe the use of his usual transport mechanism for getting home. This may be an earthquake, a terrorist action, a grid collapse or other such scenario. A lot of people were in this situation on 9-11 and had to find a means of getting home during a chaotic situation when many of the usual resources (subway) were not operational and others (cab, bus etc) were either shut down or taxed to the limit. So Joe needs to get himself home. This may take him a few hours (if he is able to get somewhere that there is at least partial transportation support) or it may take him a couple of days to make that long hike home. Hopefully, Joe will be able to find a way to get out of the worst of the weather, catching a few hours of nod-off sleep under an overpass or huddled in a doorway, if he is not able to obtain better accommodations. If the weather is good for a few days, Joe will probably be just fine - obviously, the more days he is en route, the odds increase that the weather will turn cold or rainy, making his journey much more unpleasant and possibly life-threatening. For a short trip, dedicated rain gear, tent, saw for firewood, etc can be omitted with a high chance of success. On a longer trip, one would omit these at great personal peril.
Those are just some quick examples and possibly not the best ones - but there is a distinction between a GHB and a BOB. They are not the same... the crucial distinction being that in a GH situation a destination is known where one will be welcomed and support (supplies, food, shelter) will be abundant, and the time needed to reach that destination is reasonably short in duration. Those are not necessarily true of the BO situation, where one will have to carry ALL of what they would foreseeably need for the unknown duration of the event. That translates to, a much larger pack with a much more complete compliment of necessities, IMHO.
Some packs are modular - think MOLLE or similar with detachable pouches, pockets etc... that makes for a pack that can go from BOB to GHB with a simple detaching of a few outer modules containing the gear not needed for a GH scenario. This kind of pack is very versatile and if it is well-thought out (specifically in the packing of BO supplies in the detachable modlules) it can convert very quickly from one purpose to the other. For instance, the outer module would contain the camping water pump/filter, the core module would contain a lightweight "survival straw" which are typically rated good for up to 20 gallons. 20 gallons should be more than enough to get you home even if you have to drink out of a mud puddle from a busted fire hydrant. But twenty gallons isn't CLOSE to enough if you may be on the road for more than a couple of days. The swiss army knife goes in the core module... the Ka-Bar or Gerber goes in the outer module. Multi-tool in the core, hatchet and entrenchment tool in the OM. Trash bag in the core, rain poncho in the OM. Zippered fleece hoodie and extra warm socks in the core, wool blanket or sleeping bag in the OM.
Also I think it's safe to say that in most cases, a GHB anticipates that one will essentially be traveling solo, whereas I think it would be less common for someone to BO solo. For instance, a working husband/father would be coming home from work solo. But if the decision is made to bug out once dad arrives at home, the family will leave together. Mom, Dad and 16 year old Junior will all carry packs with their own personal gear, plus they will have distributed among them the things that make a bug out existence bearable (such as tent, cookware etc) as well as distributing the gear needed for little sis and baby who are too young to carry a heavy pack. So the GHB should contain everything the individual would need, but a very small quantity. While the BOB does not need to be "everything" because others in the group will be carrying some of the shared gear too- for instance, the group of 5 people does not need five camping water pump/filter units - one or two will do just fine.