We are used to symmetry - 2 hands, 2 feet, 2 eyes, 1 nose with 2 nostrils. This is how we are designed. Google Glass decides to take an asymmetrical approach and that may be the biggest reason why people won't go ahead and plunk down ever a few hundreds bucks for this desigh.
The reason is simple: If you wear glasses you wear them usually in a design with both lenses with the same material.
Unless you want to be funny, wear a costume, go to a masquerade!
Google Glass has more one one side than the other, so while not quite as whacky as the pair of glasses above, it still looks strange.
Even this, although bulky would look better. A nice top border and you're getting there, although still not quite there. Why not hire Luxottica to help you out, Google?