Been there, done that.
It works very well on thick wings like found in pattern ships. I had a 4' by 8' sheet of .007 G-10 many years ago, and sheeted a foam wing for a Dalotel with it. I first installed spars to stiffen the cores. That was about 1990. That Dalotel is still flying today.

Thin sheets like these don't work well in compression, although they do a good job in tension.

There was a company many years ago (about 1970) that made glass covered wings for most of the popular pattern ships. There were called "Glasskin".
They dent very easily, so they must be treated carefully during and after construction.
Epoxy or spray adhesives work well.
I still have an unfinished set of Glasskin brand wings in the shop.

Harley Condra
BVM REP
JetCat REP