The more expensive Steam Deck uses this kind of glass (nano texture is apparently a fancy way of saying etched glass), so that could be the point of comparison.
Just've bought one. Will tell you in 2 weeks :->
In particular, how well does it work in sunlight / outdoors?
In what sense?
For example, is it less sharp to the point of annoyance when looking at text? Or alternatively, easier on the eyes?