Depends on your setup. If you go with the 6 camera portable setup, then sure, you have to recalibrate your capture field every time you move. If you go with the 8 cam minimum cube setup on a hard rack, no need. While the portable rig would require setup and calibration every time, it would also allow you to go to a dance studio for capture there, or a dojo, or a high school gym. Being able to go to the source, instead of trying to pay the source to come to you can be a big benefit in a small studio arrangement. As for clean up of the capture data, you would have that with any mocap solution. You aren't going to find that kind of capability for $8k with Gypsy or any other solution. And if you go up to the 2nd level camera (the Mark 17, I think), you get enough resolution to do finger capture. Aside from that, the software uses a dongle, so you can install on a  dedicated portable and you workstation, and just move your liscence. Mocap doesn't replace keyframing, but the hassle is worth it for the performance details you get from not wasting time trying to key non repetetive idle motions, for example. Or the performance and uniqueness a semi decent actor can give a character.