I use a Mika pocket holster. You can google him on line. This is my typical carry in shorts or even dress pants. If wearing a suit the 642 or G 27 goes on my ankle with a primary in a shoulder or standard waist band ... depending on the mission or threat level.
I find the pocket carry easy on my hip and back. It also gives me inconspicuous ready access on the gun just by putting my hand in my pocket. It tends to be a bit heavy for most gym trunks unless you can tighten up the string in the waist.
Often I will use a product called Thunderwear which lies flat just under your front waist band. You can google that as well. It works especially well with gym shorts. Takes practice though not to pee on it while draining the snake.
