Okay, I got a bit of info on the mystery skis. I was in Japan this summer and I found a pair in a shop. They are basically like what you would get if you took a slightly longer than normal snowboard and cut it in half. That is good because it lowers the swing weight. Also, they're a little on the stiff side, but their shortness makes it easier to butter. I'm pretty sure they only come in one size, and they've been the same colour for two years. I don't know who makes them, but it's probably a new Japanese ski brand that no one's heard of.
I'd love to try them, the only bad thing I can think of about them would be the width making it slightly harder to bindsoul.