They are onto something there but I think it still needs more refinement. Even as it stands it is better than a Theremin. But notice how there are still two cables attached to the gloves. They need to get rid of them so the gloves/hands are totally free.
What I would like to see is a video camera that can focus either on a small area such as two hands so even the smallest movement of the two pinky fingers will trigger something. Or pull back to focus on say a dancer so their whole body can be viewed and all movements from everywhere can be translated into midi data of somekind.
Many years ago Tangerine Dream came to Australia and did a gig in Canberra would you believe. (in a hotel and there was only a very small crowd in there) They had some sort of 3D full sized holagram thing and a dancer moved right inside it and had enormous control over what the guys were playing. I could not believe it! Even when they just moved their hands you could hear changes in the sounds coming out front. When they moved thier bodies way more serious sound changes resulted out front.