bianchi
I use a Bianchi for a SIG P220 and it has been a durable and trusted piece of gear. In the brush, on ATV, on foot, rough country stuff. The pistol has always been there afterwards. After many years, I see no material or wear probs yet.
I bought a thumb snap for mine as well. Out of the boonies, I can fold the flap behind the holster, against my hip and snap up, and I have a conventional snapped top draw at that point.
Any "sidekick" product has always seemed a bit cheap to me. I had a double mag pouch (for above) fail early on. The bianchi GI replacement is still on duty.