What "works" as a CCW piece is far more a matter of holster and clothing than the gun size itself. I have "a bit of a gut" and have carried just about everything from a .25 Browning to a 1911. In general, I have found ways to be uncomfortable with the .25 (Thunderwear under tight jeans) and quite comfortable with a 1911 or Browning High Power (shoulder holster under a "tailored for carry" suit).
For typical IWB behind the hip carry, thinner is better, but I've spent quite a few 12 to 18hr days carrying a 6-shot snubby that way and have not had any problems so long as I wear 2" larger pants and a good gunbelt.
The Truth will set you free, but first it will make you damn mad!
Old Scottish proverb:
If ya' cinna' drive the fooging trook, dinna buy the fooging trook!