This is an interesting watch…mainly because it shows you what happens when things start going wrong. 
A mouse doesn’t have any real “Failure” mode…if you accidentally click something it’s usually pretty easy to avoid performing a mistaken action.
With gestures, even a slight twitch of the hand or a co-worker walking up behind you could launch your model off into space. I think figuring out the intuitive way of dealing with those exceptions still requires a lot of thought. For example to “wake up” your Kinect you usually need to yell at it or wave.
It’s not to say we won’t get there, but it’s going to be at least a few years I think before the gestures and technology start getting robust enough to use practically. I’m also a firm believer that eliminating the sensation of touch from the equation isn’t a good thing. It’s one of our most valuable senses, especially as designers, and eliminating it from the interface IMO is a step in the wrong direction.