I walk on the beach with my P9 on (a lot). I am usually never more than a mile from the ocean , most of that within yards. I can lose 5 pounds in a day sweating outside in South Florida and the Keys. If I'm awake my P9 is too. I am probably going to get some flak for this but I use a can of PC keyboard duster on it once a week to blow it out and maybe break it down to check lubrication once every month or so(closer to quarterly). Militec 1 is some amazing stuff internally. I have never had an issue with rust , dirt, or performance. It is as slick 2 months after a full breakdown as it was when I cycled it after putting it back together. The trick might be horsehide. My crossbreed horsehide seems to act as a block from my sweaty self, it doesn't seem to soak up much at all . I have never had any condensation form on the gun unless I get caught out in the rain walking the dogs, then it just plain gets wet. ( I break it down after something like that ) ... My 2C.
"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy. Its inherent virtue is the equal sharing of misery." - Winston Churchill