I'm looking for a new set of RX sunglasses, and I'm considering these Transitions that claim to work behind windshields. I can't find much information about how they work in an airline cockpit- such as do they get dark enough in the bright light, do they get clear enough to still wear at night, or below the weather?

I like the idea of maybe being able to avoid ripping off the sunglasses and throwing on the normal glasses at otherwise busy times. I'm hoping this might work in some of those cases, but I'd like to get first hand knowledge before dropping a bunch of money.