I used one for some time. Whitle I was awaiting my Milt Sparks VersaMax-2. It was serviceable, but was unstable. The pistol, an all steel Colt Officers Model, would tilt forward, backward, or flop down inside my pants when I attempted to tuck in my shirt.
It is a simple shell holster with a strap attached at the bottom (Down where the Muzzle is.) Attached to the strap, at the top, is a "J" hook which slips over the waistband and under the belt. The strap ends up over the thickest part of the holster which made for quite a bulge. All-in-all, the Deep Cover was serviceable for the purpose intended (To cover the lagtime until my VM-2 arrived), and sure beat a "Mexican" holster, it was not anywhere near as stable as I would have liked.
Yr. Obt. Svnt.
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Fred J. Drumheller
NRA Life
NRA Golden Eagle