That's interesting. Way back when I was a ski racing kid (about 14) we once did a speed test where we closed off 400m of one of the children's slopes and put a photocell at the bottom, and we would hit 90+ km/h on that thing. Mind you, this was in racing gear with racing skis, but that was a flat-ass slope. The fastest we ever clocked in a race was around 120, when I was 18, in the worldcup downhill course in Åre.

Yep, having two planks and two edges on the ground is a huge advantage.