As I have seen, Tenicor protects the mag release with a little bump out of Kydex. I had a recent issue with Garrett. I bought their IWB holster for a P 2000 with optic. The new VP9 A1K fits perfectly. Additionally the CC9 fits but I had an issue with the magazine being occasionally loose in that holster. I relieved a spot with Mr Dremel and same issue happened. Just the fact that the magazine release is not covered by the Kydex appears to be the problem. The
release gets bumped and the mag is loose, ready to fall out.
I had the same issue with another holster for my BUL armory UL, mag release exposed and got bumped at 4 O'Clock carry.