Thanks for the bump...I'm in the same camp as you. I like gadgets and think my kids would get a kick (and it'd be a decent bluetooth speaker). I requested an invite and haven't heard...but I've seen them on ebay, so they are out there.
Here's a pretty glowing review: http://www.zdnet.com/amazon-echo-review-a-perfect-10-7000035980/
Screw it, I'm buying