In terms of number of pistols, I have two of my carry pistols. Two 642's for me. I alternate which one I carry monthly. The one one that's not being carried is what I use for dry fire (most days) and shooting at the range (weekly).

It does two things for me. I'm not loading and unloading my carry pistol daily for dry fire practice. I figure the less I'm transitioning from loaded to dry fire and back, the less chance for a negligent discharge. It also gives me a spare if one has to be repaired. One of my 642's locked up and needed to go back to S&W (revolvers do break).

In terms of holsters, lots of people like kydex. I think kydex in uncomfortable for IWB. I prefer leather. I've shot rifles and shotguns most of my life. When I started shooting pistols a few years ago, I thought it was the pistols that would be expensive. It's the holsters. Sort of like razor blades, but you put them in a box instead of throwing them away.

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Vegan by proxy.