Agreed, I have a new pair of (cheap, department store) glasses and I don't like the bottom frame but I have adjusted to them (some of the styles that I noticed TdF riders wore in previous years had bottom frames so I didn't think anything of it but I don't like them after all).

I haven't tried photochromic lenses, I'd like to but I have used glasses with interchangeable lenses and I did like the yellow and dark brown lenses most: the dark were good for bright days, especially winter, but I could wear the yellow ones also on bright days and they were especially nice for dull or dusk or even night conditions: the yellow seemed to brighten up dull objects.