Will Google Glass Actually Be Useful?

I know there'a lot of skepticism about google glass, but I'll throw my lot in with the optimists' camp.  Things like the stupid android watch from samsung are useless.  It is just a smaller, crappier interface for the phone you already have in your pocket.  Glass, with it's heads up display interface, opens up a huge range of new applications and improved user experience for existing ones.  With it's limited battery life, high cost and still somewhat kludgy physical design, I don't thing the first gen Glass will be a big huge hit sales wise, but in 2 to 3 years I expect it's successors to be a big deal.  Here's a quick rundown of some new apps from Wired.