I used the turbocat on a back pack vacuum. It seemed to work well on commercial carpets and track off mats.
I haven't used it on plush carpet. The brushes on them don't portrude past the rug guard very far and it does take a lot of air flow to opperate it. A central vacuum will have enough air flow. The rug rat is the same as the turbine attachament for the Heratage model kirby. The rug rat is ok performer but again it takes alot of air flow to make it work well. It was ok on the kirby but not as good as the newer zip brush. I have both attachaments and like the zip brush much better.
The turbo cat has a small air path and alot of things can get caught in them. Small paper clips or a popcorn seed will go thru but not anything much larger than either of those.
I would stick with an electic power head. No loss of aggitation from the carpet being cleanined due to lack of air flow and the air path openings are the same size as the wands attached to the nozzle. No loss of good air flow. Also the turbocat is a very light weight attachament and may not aways make good contact with the floor like a heavier mortorized tool.