NB: I bought Google Glass, picked them up 10 July 2013, and have logged maybe two hours with them as of 20 March 2014.  My kind, supportive review here: https://www.hrabaconsulting.com/blog/2013/07/31/a-hoteliers-review-of-google-glass-one-month-on-so-far-pretty-good-but-too-utilitarian-to-proffer-forth-overly-giddy-testimony/ I