Interesting equip - possible to use instead of joystick or track ir?

[Space Communist]

It actually looks pretty terrible for FPS's. Watching the demos it is clearly inferior to a mouse for smoothness and accuracy. Total gimmick.

It actually might be fairly usable for flying but really it seems much more immersive to use a stick.

Could use it for head movement I guess but why pay $125 for something you can do with Freetrack for a couple bucks?