Replying to Moment deathwish 2013 question

Hi guys, i'm looking to get a new pair of skis this year and i've got a quick question or 2 about the new Moment deathwishes.

1. I'm a park skier along with an all mountain skier but i'm looking for variety this year. Looking for something i can mob down a mountain with lots of powder and hit the rails/jumps in the park without any hesitation. It says these are listed as an all mountain ski, but i'm not too familiar with this term, are these the type of skis i'm interested in for all around usage in the park and on the mountain itself?

2. Would i be better off downsizing and getting the park models themselves?

Thanks guys