Oooh, those are cool! I'm still wearing my 5 or 6 year old prescription Oakley Minutes. They were expensive, but oh so worth it!
I think it took something like 2 weeks for my optometrist to get the lenses, they had to be ordered. It was very nice to have the optometrist heat the frame and then fit it to my face, making them the most comfortable sunglasses I've ever worn.