I have a pair of Tifosi that I keep in the car for emergencies, with full frame. The best advice I could give is that they almost certainly won't break, but will be a pain...I've changed them exactly once, and don't want to try again. Which is why for cycling I swear by my Smith Factor Maxes, which I changed in the car the other day on the passenger seat with one hand and without looking down during a decent snowfall to get my rose "snow special" lenses in.