For CC, I carry 2" j-frames 99% of the time.
usually a lightweight, in the right front pocket. The Mika pocket holster is minimal--and works well. The whole package also transfers to a vest / inside jacket pocket when I am driving.
I've assessed my needs to be typically very low--i.e., I am not out much, and usually in only 'low-crime' areas in our metro area. For any number of other reasons, I am not terribly worried about a lethal threat beyond ten, perhaps fifteen yards. Likewise, I think I will be able to handle an immediate threat with five shots. God willing, a two-shot reload from a strip--but if it's more than that, I'm probably done in anyway.
When I was sorting out my initial purchase for carry, I listened to the advice of two friends (one an unrepentant gunny, the other a cop) who both said that getting a lighter handgun would ensure more frequent carry--and I find that to be true. I carry the M&P340 (13.3 oz) much more frequently than the 640 (23 oz).
My semiauto alternative for carry is typically a P3AT--again, in either a left rear pocket (weak-hand draw) or in the inside vest / jacket pocket. Again--the lightweight / small pistol. Were I to move up, it would possibly be to a Kel Tec PF9.
I also have a minimalist underarm holster (vertical, yank-out draw) for the j-frames (M&P 340, 360, 640) and a pancake belt for a 3" j-frame. I will probably get holsters for the 2.5" Night Guard 386--both a belt and the underarm yank-out. The underarm yank out is from K.L. Null, FWIW.
Here is the link--it's the 'SMZ' model.
Were I to carry a larger semiauto, it would probably be a Commander-sized 1911, or the EAA 'smaller' large frame commander size, both in .45ACP or 10mm. These would be carried SOB or the underarm yank out.
Jim H.