I personally didn't like my JJ's in park at all. They are not as soft as they used to be considered imo... Sure, tails are soft like i don't now what, but tips are not even close (yet not stiff by any means). So, what you get is like no support on backseat landings and not that butterable tips, i mean they are just not as fun for that shit as most of park skis out there. Also they were noticeably slower than my park skis (i wax them all like everyday i go skiing), i think it's due to the huge surface area. As a pipe ski they suck like nothing, consider supersoft tails and 38m turning radius (according to Endre's measurements).
So i'd say they are amazing "backcountry freestyle" kind of skis, i really enjoyed them for what they were designed for. But there're tons of better options for wider park skis imo.