I worked with a few ricers that switched them, I called them up, talked about it over beers, none mentioned traction or salt, since they wash the cars constantly anyway, the complaint I heard most was curbs & snow covered objects an aftermarket wheel thats $300+ (add another $100 for a good low profile tire), on ice, the replacement cost for 1 tire and wheel was higher than the total cost of a winter set that would last 2-3 years..
I believe the salty mush is actually the most harmful part, as boaters might understand about water+salt+aluminum+steel (all outboard motors have aluminum and steel parts) causes some sort of corrosion, Galvanic I think, so they use zinc ingots as sacrificial lambs to stop the reaction of more important dissimilar metals. most cars don't have anything like that, that I know of..
thats not "law" just what I think I remember.