At the local resort I go to, I happen to meet alot of people, and end up skiing with them. Lately, I've noticed that a pretty large number of people are riding twin tips, but a shockingly few have ever been in a park, at all.
It's usually a bad sign when something becomes popular as purely an image. It's pretty obvious that when you don't jump, and you can't ski backwards, you've bought twin tips for one reason.
Skiing is on an upswing, similar to what snowboarding did some years ago. Now, there's 75 year old women snowboarding, 13 year old valley girls snowboarding, and 45 year old bachelors snowboarding. I remember seeing a snowboarder and thinking 'Wow, that's new, that's badass..etc', and now I see more snowboarders than skiiers. It's got a bad case of overexposure.
What I'm really trying to say is that some kids buying twin tips to look cool is probably going to lead to your mom buying a pair because they're all the rage, just like in the case of snowboarding.
Whether or not a few posers is a good thing or a bad thing, though, is up for discussion.