When I took the tour of the NS factory Vince told me they don't sponsor "big name" riders because they would rather put that $$ into the boards they make. They put that $$ into R&D, and finding better materials to make the best boards possible.
This. I saw a clip of their factory tour and the guy said exactly this. Pre-tensioned fiberglass is 10X more expensive than the usual fiberglass used in regular snowboards. They can afford to do that with not a noticeable increase in price to the competition b/c they don't pay big $ for marketing.
Pretty sure there was a guy riding an Evo in the superpipe during the last Olympics though. Maybe a French dude? Not sure if he was sponsored by NS or not.
Correct. NS actually posted on congratulatory banner on their site after the event...but noted that he was not sponsored by them. Pretty cool.