I'm still getting used to them, but I like them. I may get a second pair just to have a spare. I wound up spending the bulk of a day without glasses and hardly able to see, and it was challenging but made sight all the more worth it when I got these (Ralph Lauren, from Lenscrafters). I've never had purple glasses before!
But I'm still lusting after these Bulgari ones: (they didn't have them in the store)