For the moment, the topic of privacy will always come up during the discussion of Google Glass. Privacy issues aside, if Google continues to improve Glass, it could become a very useful tool to photographers.
You can view more examples of photos taken with Google Glass by Trey Ratcliff on Google+.
What Glass does is allow hands-free photos to be taken — thus removing all the shake and wobble of hand-held photography. It’s probably one of the defining advances Glass will make in photography: Humans can hold their heads almost perfectly still while taking a picture; we can’t do that with our hands.