Photochromic glasses

[Frozr]

Hi!

So i broke my corrected sunglasses during my last leg to homebase..

While shopping for new ones I stumbled on the new transition gen 8 lenses, they claim to be half clear within 2 minutes and full clear after 4 minutes.

Any documentation about photochomic lenses seem to be dated (when the lenses took up nearly 30min to clear)

Are there any users of these in the flight deck? Can you tell me if the investment is worth it? Im thinking to change my dailies to them and keep a pair of sunglasses on the side as well for those sunny days. Or just stick to Normals and Sunglasses?

Thanks!