meh...nothing special IMO.
the rocker curve is next to nothing compared to most skis with rocker which loosens up the feel a bit, but not as much as i was expecting (coming from salo 2012, on3p jeronimo, rossi s3, plus a bunch of carving skis with tip rocker). Like it was mentioned above, still quite stiff compared to other companies and very stiff for a "jib" ski.
Honestly though, im not a fan of magnatraction on the NAS skis unless you size DOWN with them. I found most people embellish how well it works based on opinions gathered from the snowboards with it but the NAS skis are nothing like the feel you get on a banana traction gnu/lib board.
Think about it, you have all of your weight on ONE edge with a snowboard and snowboards tend to be significantly shorter than skis (hence more weight on less edge). With skis, you have your weight divided to some extent between both feet AND you are running longer skis which means LESS weight per edge. I tried the 156, 165, 171(ish), and 178 NAS skis a couple seasons ago and found the magnatraction was only noticeably effective on the shorter skis. my 2 cents anyways...