I have run with them, biked with them, shot with them, driven with them, and flown with them. They work good and last a long time. On a related note, I order all my prescription glasses with polycarbonate lenses. I have had numerous encounters with flying debris from high speed machining and the polycarbonate lenses work every time. There are also some very effective polycarbonate sunglasses that fit over your regular glasses.
Funny thing is, they are cheap, work very well against UV and also provide ballistic protection.
Head Cover Lets face it, a lot of us are getting a bit older now and a bit thin on the scalp. In the summer and in the desert it makes sense to keep a hat on your head. To me that hat is a ventilated, light colored affair with plenty of coverage for your face, neck, and ears. Tilley and OR make great hats in this category, but it is always entertaining to see a good old Pith Helmet. I like straw hats, too.