[jeffool]

I agree. A robotic arm (even a weighted stand with a hard plastic arm and thin plastic sword) seems pretty much required to get realistic sword fighting in. A good camera on the base that keeps an eye of where the "sword" is could do a reasonable job of keeping it from hitting most things, yeah?

And I think people wouldn't have a problem with it. They made room for the entire Rock Band ensemble. Just make it fold flat-ish to stow under a couch or in a closet.

[lloeki]

Indeed, and Kinect requires enough clear space for a simulated duel to take place (especially for two players).

(Time to ramp up my iaido skills)