I've got TWO for every handgun I own...seriously, I do.

I have to wash off the outer surface from time to time, and I use the second holster while the first one is drying. These Remora holsters clean up really easily, by the way: dish soap, hot water, and a light scrub with a hand towel. I usually give them a couple days to dry out completely, as a tiny bit of water tends to get wicked inside via the threads.