https://www.otdefense.com/nub-mod-for-als.html
I just received mine. I might need to order a few more for all of my ALS holsters. I don't see any downsides and it's much easier to disengage.
I've got a 3 gun comp on Sunday so I'll have some more testing then. It's supposed to be raining so it might be a good day to use it.