S30v is pretty corrosion resistant. A few years ago my son got some salt water on his Kershaw leek, and when we got home it had developed surface rust and got grit in the pivot (sand I am assuming) we took it apart, cleaned and oiled and it is good as new. Regular washing machine water shouldn't be an issue for stainless. I have a victorinox classic SD that I keep in my watch pocket, my wife has found it after doing laundry several times, but other than cleaning the lint out of it there was no noticeable effects.