I demoed them last year, I thought they were great as an "everything" ski, they actually made nice turns all mountain (actually preferred them over the M666's) I thought they were a little heave for park (but they did have very heavy demo bindings on them)
I can't comment on durability, as I was on a brand new pair for only 1 day...
I wouldn't buy them strictly for park, but if you want on ski that can do it all, and is still descent in the park, they're good.
I actually wouldn't mind buying a pair myself (I'm sick of the soft park skis and want something stiffer)
I'm going to check out the Scott's first though