The point of the parent post was using these things in creating games, not as a game interface. That is, to make animation more realistic. Then again, given commercial motion capture systems are in the 5-10k range for pretty good stuff, I don't suppose that's a major concern for a game studio.

Bah, my comment was something I had in the back of my mind... so I looked at the parent and misread it as being on the same topic, sorry :)