Yes I have one, excellent for pre-spray agitation, though it will void the warranty. No don't use it all the time no need to really a 'grandi groomer' hand rake will do a more than adequate job and I also have a rotary. I tend to use it on mingers, eot, pubs etc. Domestic poly twist today, pretty dirty but used some split X vac, groomed and rinsed with a half dilution of pureclean. Just a lounge and hallway and could not be fussed to pull the envirodri out of the van. I have done quite a few dry cleans with it too. I'm glad I purchased it and it's nice to be able to go to it when required.
Simon