If your pockets are that small, I suspect you will be unable to get your hands into them in the first place. A PF9 is about 1/8" thinner than an average-sized guy's hand, at the knuckles.
Its not about whether or not I can cram a gun in the pocket and get it to fit; its about whether or not if I put a gun in my pocket will it print.
I guess if I cant carry a PF9 in a pocket, then I would be stuck carrying it on a belt, and if I am going to have to belt carry, I might as well just carry something bigger like my G19.
There is a big difference in size between a PF9 and a G19.