Their marketing worked on me. I pre-ordered one. Like many, I suspect, I ordered mine because it looked like a cool toy, not because I thought it filled a need.

I've only played with it for an hour or so in total, but so far I'm returning it. Maybe it's a training issue (on my part; the device doesn't learn, as far as I can tell), but it just doesn't work very well for me.

The demo apps suggest a severe lack of precision when I'm using it, and complain that the room is too bright. Coincidentally, it's a stormy, overcast day, and my office lamp burned out this morning. This is as dark as it'll ever be in here during the day.

I'll definitely give it some more time (you have 30 days from when it ships to return it), but I'm not that interested in learning how to move my hands in a Leap-specific way, or in permanently darkening my office.