My Safari is my rain/snow/road salt/daily commuter. The rear has some chain lube gunk,but the front is fairly clean,and it's never been given a proper bath. My Fuji cross bike went from canti's to V's,was only ridden in nice weather,and my hands would get dirty just airing the tires. My old Coda Comp was really bad;the entire lower bike got covered in brake crap. In both cases things improved when I went with Koolstop salmons. Rim brakes dirty your rims.