Why? It seems to be more cumbersome for most computer functions.
Can you see this improving the way you do word processing/spreadsheets, internet browsing, social netoworking, file/media management, or even photo editing?
There is no physical clicking or tapping of icons, it's some cool camera technology but unless they give you a glove or ball that you hold onto for haptic feedback, it's going to be very hard to register that you gave the right input and will make the user slower at switching between applications or manipulating objects.