i have them on mine, i had them left over from my m8 the year before so i put them on. they push a lot less than the polaris skis. but the polaris skis are the best oem ski out there i think. but i do like my powder pros.
I had them on mine, they had the carls cut on them as well. I took them off and went back to the grippers. They were a good upgrade on the older M8s but not so much on a pro...well for me anyway
I had the Powder Pros with the Carls Cut in them on my '11, and I'm running the stock Grippers on my '13 and I can't say Ive really noticed a big change. As was mentioned above I do think the Grippers push a little more than the PPs did, wasn't enough of a difference for me to drop money on skis.