I've carried my nano with a remora no clip holster in gym shorts, sweat pants, pajama pants and my jeans. I'm a lefty so I carry at about 7:30-8 o'clock and it pretty much stays put with that remora holster. A pocket inside of cargo pants or cargo shorts? Yes but form me it's a bit too big for "pocket carry".
For true pocket carry, Beretta just released the Pico which is a true pocket pistol. It's a .380 and there is supposed to be a .32 conversion barrel coming out for it.
SIG 1911 .45 ACP
SIG P229R 9mm
Beretta BU9 Nano 9mm
Beretta 84FS .380 ACP
Ruger MKIII 22/45 Target .22LR
PWS (Primary Weapons Systems) MK114 5.56