Google Glass is now available in the UK. It's £1000 so I'll be waiting a long while for that to get to a more reasonable £500-600 before I'd even consider it.
It's a strange one because I don't like wearing my glasses (slightly short sighted so I'm fine without them) but with these I don't think I'd like wearing them without the addition frames as they do look a bit ridiculous.
You can currently have one set of frames or shades free.I personally like the bold frames:
and if you don't like the idea of Google Glass but do like the idea of wearables, then maybe a Ruffus Cuff is more up your street: