> Side note, while BRG is sturdy, the surface finish is also kind of
> fragile.  Which means some knob with a nail can scratch their initials
> in the surface, and while there is no chance the glass will break,
> mechanical etching is not a challenge.  (and special cleaning
> requirements, blah blah blah...)

I recall reading, many years ago, one of Gerald Durrell's books about owning Jersey Zoo in which he mentioned having to repeatedly replace the armoured glass in the gorilla enclosure because some visitor had taken the opportunity to prove that their engagement ring had a real diamond.