The Black Ops Pro's loops are tuckable. Go to the website and you'll see how they work.
Ordered my Black Ops Pro, for my new Kimber Custom TLE II, from Rocky the other day. Hopefully it will be waiting for me when I return from the sandbox.
No problems with my mag release on my Glock. I am not saying that it can't happen but I haven't read/heard this happening with the Black Ops holster.
Also I am still loving it.