I've used the mitt that they sell at the Chemical Guys shop in town. It works about as well, with the benefits that you mentioned. The only drawback is the relatively high price (they charge like $40-$50), which I think is a little on the outrageous side. I can drop quite a few clay bars and still be ahead..
2013 Genesis Coupe Grand Touring (Tsukuba Red)
Borla Cat-Back Exhaust
Megan Racing Coilovers
RC2 Maxxflow Intake