I think the glasses with a hinged sunglass cover look absurd. I won't be seen dead in them! When I see people walking around with the hinges up and the sunnies sticking out, I think they look utterly stupid and want to burst out laughing!
Don't get Reactolites or transitions or whatever you call them. They are not recommended for flying and don't change quickly enough.
Which leaves you with dedicated prescription sunnies. But be careful to get less shading rather than more. Uncomfortable to be wearing shades too dark for the conditions and making it difficult to see the darker corners of the panel. I have dedicated bifocal shades. You only need one pair, so keep them in your briefcase for use flying only. But I have to say I barely ever use them.