xds 9 4.0?

[Click Boom]

Is it much more effective and/or harder to conceal than the 3.3?

[KrisDSA]

I didn't noticec diff. I had the 4.0 in 9 amd 45 and still have the 3.3 in both.

[bwhited]

concealment is normally made harder by the grip.
The grip has a tendency to stick out because the barrel is along the side of the body. For instance, if the firearm is either in a straight holster or stuck in the pants, the barrel goes down your leg where the grip tries to stick out.
This means that the barrel length makes little to know difference for concealment.
Now consider that you are comparing the XDs 3.3 verses 4.0. You only have a 0.70" difference in a dimension that does not make much difference.
My conclusion is that there is little to no difference in how the two carry.

[Click Boom]

^except AIWB carry where barrel length is huge (if u want to sit down).

[Click Boom]

I didn't noticec diff. I had the 4.0 in 9 amd 45 and still have the 3.3 in both.

Not much noticeable diff in accuracy?

[bwhited]

The 4.0 will have more weight at the muzzle so it will be easier to shoot. Also the longer sight radius will allow for additional accuracy (the longer the sight radius the more precise the sight picture is).

[Tovarish]

The difference in comfortable carry is largely a personal one.

I will say that my understanding is that the added length is more beneficial in the .45 than in the 9mm. Two of the problems the added length solves are recoil and short barrel ballistics, and those are potential problems in the short .45 but less so in the 9mm.

[KrisDSA]

Not much noticeable diff in accuracy?

shot them the same. That is why I sold the 4.0

If I remember right even Hick didn't notice the diff

[Click Boom]

Sweet thanks