I can't bring myself to clean an already "clean" gun. I practice at the range at least every other week, so my carry gets cleaned regularly anyways. I don't see why I should clean it more than that. As for the sweaty rust problem, I solved it by wearing an undershirt and tucking it in, then your IWB is between the shirt and the waistband. I still have to toothpick the slide grip of the skin that comes off my fingers from chambering a round, eww lol