I used to use the suede IWB holster that NAA included with their revolvers when I pocket-carried the two that I had. I regret to report that it was not an infrequent occurrence (half the time?) with both of these guns to find that, somehow during the day, the hammer had bounced up out of the between-the-chambers notch and was now resting on the primer of a cartridge. Ungood. This combined with the slowness of actuating the things, their practical inaccuracy, and their abysmal penetration and velocity led me to sell mine off.
Anyhow, don't use the suede NAA IWB in your pocket with these - get a kydex by Grandfather Oak or someone . . . the friction fit of the kydex should help the cylinder not turn in your pocket.