I've used them & was very pleased with the results.
I was doing my Dad's totally neglected black Mercury & I felt I needed more OOMPF than a std. foam pad. A friend gave me his old 2-speed WEN rotary but I had never used a wool pad or a rotary buffer before so, at the suggestion of Scott P. from specialitymotoringproducts, I opted for the tufted pads.
Same aggressive-to-fine color scheme as the std. Lake Country pads and my Dad's car turned out great.
Anyone that has used wool pads with a rotary may find that the tufted pads don't cut quickly enough but, for someone who was chicken to use wool for the first time, it was an excellent "baby step" introduction to using a rotary.