With the right holster (I prefer Alabama Pocket holster), and with absolutely nothing else carried in that pocket, and knowing that you need to clean & relube weekly (pocket carry results in a considerable amount of crud), there is no reason why you cannot carry a modern striker fired pistol of the right size in your pocket.

I daily carry a Sig P365 in this way, and for almost 15 years prior I did the same with a Kahr PM9.

__________________
Only a cold warrior