If you get any of essilor's scratch coats (or any of unity's they offer a warranty your optician may not tell you about (so he has more wiggle room, or he may buy without warranty to save money)
Thanks. I actually wear contacts most of the time--which is when I need readers. They're the ones that beaten up because I'm always taking them on and off and sticking them in pockets.
Progs are pretty great. Some minor downsides, but comparing them to a lined bifocal... Depends on personal preferences.
Neat Sherlock Holmes Ian trick, at about halfway up your lens, near the nose, and temple, there are some laser etchings (your progressives) these should tell you what kind of lens they are and how much add power you have