Did Chic ever use one? The older Jay Pee holsters had some different stiching that kind of sucked, I have heard. Particulalrly the swivel holsters. They switched the stitching out and it was much better. I carried Model 64 in a Jay Pee holster, and the range staff at Rodman's Neck always had stuff on the wall. The Safariland 9MM holsters, too. But I never saw or heard of a Jay Pee holster failing.
In the event of a gun grab, we were taught to flip the holster upspide down as you fought the perp off. The leather tag inside locked onto the cylinder pretty well. The swivel version was much preferred, although I was never authorized. I had the non-swivel version, which I and most other new rookies promptly switched out for the swivel version. Bosses never really cared. The swivel was much better when riding in a vehicle.
I still have both of mine. State of the art? Hell, no. But functional for sure. I recall ONE guy who carried his .38 in some sort of Safariland Thumb snap retention holster. Again, nobody cared. I qualified with him once. He had his Jay Pee on for inspection, then threw it back in his locker when he was done. I didn't have mine for long. Less than 2 years before the 9MM took over. But I surely stood in the rain and snow with one. Cylinder never opened and the gun came out every time.
I teach a high school law enforcement class now. I bring in my old duty belt and use a Model 10 plastic red gun. Ask one of the kids to lift my gun out. Never been done yet. Some have gotten close upon looking in there to figure it out. But never in the time I would be smashing their face in if it was a real street encounter. Sure, the secret would get out on the street. Just like it did for every other retention holster there is.