I suggest a FIST kydex pocket holster for pocket carry. They are very thin, feather light, and securely cover the trigger. The also have a little thumb catch on the back to help draw the gun from the holster.
I ordered one recently for my Glock 27. Don't have it yet, but they look very good and I like FISTs' ultra-thin Kydex. I will probably have to get a better pocket gun in the next year or so and if I do a FIST pocket holster and DeSantis SuperFly will be in the mail ahead of time.