no. looking cool is just one of the benefits. ive never had fog, and the flexy frame conforms to your face. they're extremely conformable and the big frame has a huge field of vision. the one problem is the chrome wears off if you fall on them too much. but a the new "baker lens" just came out, so they switched the double lens positioning so the chrome can't be scuffed. they're amazing really.
which is why they came out with the new lens! although im not sure if it's the default lens that comes with new goggles. come to think of it my friend had a pair of dxs before he got some airblaster goggles, and he got them because his dx goggles got so scratched up. we both had dragons before this, now i swear by them.