If he would own one, I absolutely would try it
but he only did ride one on a demo day (fresh and very soft groomers - so very limited experience with it. He decided against it due to the pronounced magtrack, assumed that for high speed carving on hadpack, edges would bite too much, but that's guessing and not actual experience. He still tends to also get a Flagship, will give a longer one a try in Jan, since he was very excited with it when trying mine for a day on hardpack.)
I've no clue what "disengage" could signify... dictionary didn't come up with a translation I could figure out the meaning for snowboarding (we both ride +/+ angles).
Can't comment on this backseat/front foot difference since I haven't ridden the xv. I'd assume I don't ride in the backseat, my front leg is the one that has to work most and gets sore muscles, hind leg is the lazy steering leg
Really can't say if she would like either of them, don't know the models she owns already, so I can't compare. Depends on what she expects from the board, what you aim at riding. I'd say, it's less a question of if she can ride them - I'm convinced with strong legs and determination one can ride most boards - it's more a question if she likes the compromise (stability vs agility). My main requirements were float and stability at high speeds, for which the Flagship is perfect. The compromise in less agility I have to balance with my legs, which is ok for me. Sure, in challenging narrow terrain I would get tired sooner than with a more nimble board, but we mostly ride steep open alpine terrain and there it shines.