I used the Kinect once for a project but I used Motionbuilder and the Brekel kinect freeware http://www.brekel.com/.
So I didn't use the Softimage plugin.
Its fun to play with and you might get a few motions out which you can use but its still too limited. (maybe if they manage to use more than one kinect synced it could become a poor mans mocap system)
I was able to pull out arm motions(picking up a cup) or 2-3 steps as a base for a walkcycle but I had to use a ton of clean up filters and keyframing to get anything out.
Also I mixed different mocaps. Once the arm worked but feet where slipping etc.
It was for that project still a big timesaver as I had to animate 10 background chars with subtile motion so it was mostly used to give standing People a bit of "standing" motion