Looks interesting but.... 98% of the audio used in the demo video sounds like it could have just as easily been produced using a standard midi keyboard and pitch/mod wheels.
I like the idea of the fretboard thing and being able to swap surfaces on the fly. But play me some audio that illustrates how those different control surfaces are able to produce audio I could not get any other way. Honestly in the video I watched, they're not doing that even a little.