I agree. There are watches that can do the same; but they look more fashionable.
Would it be equally ridiculous to throw someone out who had their phone up clearly video taping their entire time in the resturant?
Would it be equally ridiculous to throw someone out who came in with a hand held camcorder, holding it up the whole time?
What about someone coming in with a GoPro cam attached to a helmet as they were in the store?
All are doing the same potentail thing that Google Glass would be doing....video recording in the store. Do you feel that it'd be ridiculous in all those cases as well?
Personally, I doubt I'd toss someone but I'd also understand why you would. As a shop owner you have to at least pay partial mind to what customers may or may not think and the potential issues of customers being video taped when they don't wish to be.
"I am appalled that somebody who is the nominee...would take that kind of position"
"A court took away a presidency"
"...the brother of a man running for president was the governor of the state..."
It's horrifying because Trump is blunt instead of making overt implications.