I’ve replaced all of my “pretty” holsters with Serpas.
I put a strip of that scrubby sand paper stuff you see on the edge of a stair on the lock/release.
it informs my forefinger it is in the correct position to depress and draw, with the added feature that the finger is reminded to land on the frame as I acquire sight and then place muh Puller in the hole thingy.
Couple of local cops changed to it and love it.
Like me they practice with an air gun.
Safety first!