I carry my 2nd gun in the back right pocket. Usually a Seecamp .32.
Sometimes its a micro Desert Eagle, other times it's a Walther TPH.
My front left pocket gun is either a Kahr PM9 or a Ruger Sp101 depending on how much pocket I've got to work with.
I had a Sig 238 and sometimes carried it cocked and locked in the back right pocket. I just sold it the other day because it annoyed me how sometimes the ejector would get out of place and you would have to disassemble the whole gun to put it right. I would have thought Sig would have fixed this about the Colt Mustang but they just made it worse.