Anyone try Photochromic Sunglasses? I am curious how well they actually work.

For my commute ride i leave around 4 - 4:30am. I used to wear my PBK glasses (they broke - great glasses for the price though) with the clear lenses and switch to dark lenses at work. With Summer coming it will be pretty bright by the time i get to work.

I like sunglasses so my contacts dont dry and my eyes are pretty sensitive to light.

I am looking at Endura Marlin Photochromic Sunglasses from PBK. Any experiences with these or Photochromic Sunglasses in general?

thanks,
Mantis