I now have five horsehide
I now have five horsehide holsters (four vertical scabbard, one best scabbard) for various pistols and now three mag holsters, which I have purchased over a 20-year period. They are all excellent.
The oldest is a vertical scabbard for a Sig Sauer P-220. It and a horsehide 2-mag holder are my routine winter carry ensemble. The pistol holster could stand to be shrunken up a bit, but I'm in no rush, as it is still snug on the pistol when wearing it. In another 20 years, I just might need to break down and replace it.
I can't speak to the cowhide products, but the horsehide products are market-leading for quality and durability.