Frequent lurker, infrequent poster.
I’ve used both. Some are much better than others. As mentioned, Serpa not so much. Safariland much better. I have several #6378s that are excellent holsters with very “natural” retention releases. They also are a bit too bulky for every day carry though. Field holster of winter with a coat. I have numerous leather OWB with a simple thumbreak. As long as they ride right on your body...they are fine. Right now I’m using a DeSantis Thumbreak Scabbard for my 3” GP100 .44spl. It disappears under a light cover shirt, and thats a big hunk of stainless. Same with a Don Hume for an HK USPc. That one is the Double Nine model. Years back I had Mike Garrity of Garrity Leather make me up a IWB for the same HK...with a thumb break which was required for me at the time. No issues with that either.
Whatever you decide, TRAIN WITH IT. There’s an old adage that says at least a THOUSAND reps are required for decent muscle memory to kick in. Some of us are even slower...lol
Good luck on the quest. Holster hunting is always a hoot.
