Just got me a pair of these for my commute:
They have the Fototec lens, I love them.
I have been pretty disciplined about commuting (5 miles each way with some minor hills) every day to work for the past 6 weeks or so.
I think I have only missed 2 days when I had to run errands or transport items too large for the bike.
It's really helped me lose weight (not sure how much: I have a "don't ask don't tell" policy with my scale) but I have been able to drop 2 inches in waist size so that's good.
I have also saved a bunch of money on gas.
My plan is to ride all winter as well unless there is ice.
I have outfitted the Defy with a rack and a Topeak bag, all the better to commute with.
I had a 2 week spell with 3 flats: 1 blow out and 2 pinch flats so I have learned to be more careful with curbs and potholes and such.
Loving the rides though, it's my favorite part of the day!