Funny this came up, I had just written Never Summer to find out what they set their base and edge to on my Legacy and this is the reply I got from Vince with the explanation as to why they set it to 0 and 90. Also I second the awesome factory wax job....it lasts a while. As for my Legacy, I have a 1/1 bevel for all mountain riding and detuned the tip and tail so it doesn't catch on the hard pack.
From Vince at Never Summer:
"Sorry for the late reply. We flat grind both the base and edge 0 degree. No bevel, here. We believe it is more important to have a smooth base and edge than a bevel for snowboarding. With all your weight on one edge you can dig in deeper than say a skier that would want a bevel. Obviously wax is super important. We love the Saucer Wax, it blends molybdenum which is very slick so it works awesome on cold, dry snow. Then it would have florocarbon or teflon for wet snow. Combined with graphite to last. It works great on all phases of the mountain."