I read a review by the BBC technology correspondant, who was able to use one in London yesterday. He seemed to confirm that it is as good as reported. He asked it "What is the weather like today" and it responded with a forecast for the local weather at his location (London). He tried a couple of such unpredictable questions and found it appeared to live up to the hype. But, I agree, it will be interesting to see. I think we've all got used to people apparently speaking to themselves while using this Bluetooth handsfree earpieces, now we'll have to get used to people talking to their 'phones (OK - I know - yes, people always talk to their 'phones, but you know what I mean!)
Tim