I think I remember something like that too. It kinda defeats the purpose though, because if you are somewhere where there is enough incline to get air, you might as well be wearing regular skis. But whatever floats your boat, go for it; somebody decided it would be cool to cross country ski until your lungs bleed and then shoot at targets, and now it is an olympic event. I dig XCountry skiing, but I usually prefer to let gravity do my moving for me on the mountain.