Shoei blue iridium to match the R6 (that was a long time ago)
found it so good I always get an iridium visor whenever I get
a new lid irrespective of what colour bike I’ve got
Dark visor for bright days, clear one for non-bright conditions. Simples.
Plus they look uber-cool esp compared to sunglasses under a clear visor. Meh.
But do your own thing of course
Flip down sunvisors are useful but not ideal in my experience (mainly because they look like you are wearing sunglasses under a dark visor hehe)
Re carrying - defo get a soft lined bag (helmet bag in an emergency) to carry your spare visor, they won’t break but will scratch if you use even harsh language at 'em especially any pinlock type insert. I either carry mine around my body inside my suit or in my dedicated sleeve behind my bumbag (not ballbag).
I’ll 2nd that, flip ups save removing helmet on entering shops, internal visors saves carry an extra one around, and sodding about swapping them over
have caberg too