Although I would not want to put a lot of rounds through it, a Keltec P11 is hard to beat for size, weight and number of rounds. A PPS is my choice.
Holy crap. What size pants do you wear?
+1When I need to pocket carry my Nano in its pocket holster looks like a wallet.
I thought the G43 is a little bit smaller and slimer than the G42?Another vote for the Glock 43. I looked at the 42 (.380), but the 43 is not much bigger. I have a DeSantis Nemesis pocket holster for it, but find that more often than not, I carry it in my waste band, either in a kydex holster or in the Nemesis. It stays put either way for my purposes.
The gun itself is really nice - big enough to shoot, small enough to carry. Not a Glock guy here, but I love that thing enough that I spent money on a G19 also. Might be a convert...
Glock 43 with a "belt" clip would probably work pretty good. I know, I know, everybody is afraid it will "go off" with a belt clip. I, personally don't see the big deal. I carried a G19 for years with a belt clip and felt very comfortable with it. But, that's just me.