People in this thread just don't get it. It does, indeed, fucking matter how the lip is set up.
"BUT this is FREEEEEskiing."
Then go build a ride-on urban rail and see how much respect that gets you. It's a matter of difficulty, not of freedom. The finalists of this contests should be the best at what they do and if they need to build sissy lips onto rails then they should get more comfortable on rails.