[watty]

For me the key is making them inconspicuous, or at least look like normal glasses. I can't imagine adoption if they're bulky or have logos on them.

[pragmatic]

Unless the logos are from Armani etc. Glasses already have logos on them.

Just got a new pair of glasses. Currently there are Nike, Adidas, Harley Davidson and Armani (among many others). But the multi color Google logo...not so much.