Replying to Skiers and boarders in the same films.

I've been watching alot of the am film teasers and i think it's really tight when theres skiers and boarders in the same films...its like it shows the two different styles so it mixes it up and makes it more entertaining. What I want to know is why i only see this in am films...it would be really sick to see a pro film with skiers and boarders. I guess it's mostly because of the sponsors of the movies that do a lot of the funding and the skiing and snowboarding brands would clash? I dunno what do you guys think