I have Bolle Parole glasses with inserts. I like 'em, but don't love 'em.
+ changeable lenses, including blue for tennis, yellow and clear and even more
+ bifocal
+ can keep glasses if prescription changes
+ Price is not insane
- four surfaces per eye to fog up
- Fit is OK, but not stunningly perfect
Getting the inserts in bifocal has been great. I can now read the tiny numbers on my Garmin!