Smith, Bolle, and Uvex have photochromatic lenses, they've been around for a few years. I'd love a pair.
The Nike goggles are so ugly though.
EG3 is dope, looks like they will have one of the better designs. The M2 and Doom are sick,. but there is hardly any sort of seal between the lens and frame. They are plastic on plastic which could definitely leak air in.