Just buy it already!  It works!
This thing works great.  My dog hates the vacuum cleaner so when I hooked this up and brought him over he was very anxious about it.  I had to hold him while I turned on the shop vac and got started.  Within a few brushes he had forgotten all about the vacuum and he was pushing up against me to be brushed more.  It must feel different than just his normal brush with the air moment.  The brush cleans flawlessly and the dog loves it... he isn't even as afraid of the vacuum anymore.
Rating: 5 stars