I had AR6's last season, I had them mounted center and they were SO much fun. I skied mostly park with them, but did some groomers too, but didn't really have a problem with them on the groomers.
This ski gets the most questions on mounting than ANY other ski, and to this day I can't really figure out why. This summer I've answered this question for numerous people, probably like 10-20 times in like 3 months, it is sick that this ski is getting used so much, but really its not that different from other skis, it's just personal preference.