You do understand that to do all those supposedly great things, you have to wear the dorky glasses on (yes, they're dorky!) AND a have smartphone with you. So there is a cost, both financial and social.
Not sure how you thought of the bar scenario, but people usually go to bars to socialize, they watch a game or show but usually in a group setting and that starts a conversation, debate etc etc about it. Not sure if enough people go to bars with dorky glasses on so they could watch whatever they like, alone. No doubt some would, but most would not.
>> taking inventory
Niche and "There's an [or 500] app/s for that."
>> automatically recording live events then replaying them
IMO that takes away from enjoying it, unless you're being paid to record it.
My point is that niche applications exist but most people will not see the benefit of having glasses on. Google loves them, imagine the "unlimited possibilities" of showing ads right in your eyeball, but what's in for the wearer? Not much, IMO.
P.S. I tune out people like Scoble, they're famous for being famous and they cement this by being social media whores "early adopters" or whatever. His opinion means jack, in fact it's worse since he's sponsored by RackSpace. Each time he gets mentioned, it's better for them and for him, thus the bombastic claims.