Coatings: Anti-Fog

I have a Liberty Sport Free Spirit frame that originally was prescription transition sunglasses / safety glasses. After cataract surgery, I no longer required the refractive functionality, but wanted to have transition sunglasses that I could use indoors for eye protection.
I attempted to purchase the non-prescription lenses on-line, but Liberty Sport's website did not have the needed functionality. I called customer service, and they were able to assist with the order process.
About 2 weeks later, the lenses were delivered to me. This is when Optics Outfitters "dropped the ball". The lenses were shipped in a plastic bag without any protection against shipping damage. Really stupid!
Fortunately, there was no damage to either lens.
I installed them into the frame and they seem to function well except for the photo-chromic transition (darkening). They don't seem to get as dark as the original lenses did. I have not used the glasses in conditions that would test their anti-fog functionality, so I can't comment.