I have a pair of Decots, a pair of Randolphs, and a pair of Pillas. They've been accumulated over twenty years of shooting with prescription shooting glasses, and I would have to agree with Stan. The Pillas are good for a few targets per round of sporting clays. Their coatings and optical precision take these rotten eyes of mine and help me see birds I'd never have seen with the Decots or the Randolphs (and I've tried a side by side comparison, though the prescriptions do differ). As well, with my prescription, my Pillas are half the weight of either of the others.
As far as impact protection, this is their description of their lens material. "Ballistx is stronger than any lens transparent optical material currently available on the market and is guaranteed not to break or crack. The Ballistx material is a bullet-proof polymer that is replacing polycarbonate for military and security applications. Please see our bullet video demonstrations for an unbelievable sight in comparison to Polycarbonate." I've seen the demo, but I can't find it online.
My Decots and Randolphs both did good work for me, but I feel that I've gained more with these than I ever did with any other shooting glasses.
I may have to switch...