Most Poly-carbonate glasses are very good and almost all glasses manufacturers have gone in this direction with their offerings.
As for Bolle, I have been using their glasses for well over 10 years (still have them) and they are very, very good. The last pair I got did have the resin or coating start coming off a little on the outter part of the lense though. Not really a big del in my mind. The other 2 pairs I have are still in great shape.
Yes, they will scratch and should be rinsed with fresh water and wiped clean with a soft cloth. The saliva trick also work in a pinch and keeps them from fogging up if it's cold out.
Kadir
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