I haven't bought Sparks yet, but I guess I should.

I did buy a Galco "Stealth." The holster has a stiff piece of leather sewn at the barrel end and a "J" shaped hook that the top of the strip of leather near the top of the holster. You can tuck a shirt in between the holster and the strip of leather. The "J" hook goes behind your belt and up under it, so with a black belt it is not that apparent. Unfortunately I haven't mastered getting the gun out of the damn thing in any reasonable amount of time so I don't use it too much.

I always have a hard time getting my middle finger between the holster and the gun grip with IWB holsters, these holsters feel like the gun rides too far down in them. I guess they are trying to make sure the trigger is covered but I feel like I am only getting two fingers on the gun and am about to throw the thing down the street.

I have bought a couple of the nylon DeSantis IWB holster because I could get them right away while waiting for another holster to be made and shipped. They work fine.