You can get ski maps on an iPhone, and I bet some apps are GPS-enabled nowadays. I just don't get the use of a little display showing you your speed right inside your goggle... I guess if you are used to driving with your GPS on the dash, that would be a familiar experience. I sort of get it is you are skiing backcountry or a big mountain and want to "look ahead"; however, no GPS would let you see the snow coverage, conditions, etc, and that's what matters. The last thing i want is to have skiers look at their GPS while actually charging down the trail, "ski by wire" is a bad idea... I am sure this device will sell very well.
BTW, you want to ski with a GPS device, and you get lost all the time, but you ski without a helmet?