Some kids who go to my skatepark come once on a Blade or some other scooter and are useless. A week later they've got a Pro, unbolted and still cant do anything.
Yaks in my opinion make great front wheels. Not sure about the Yak metalcores but I've ridden pretty much every other Yak branded wheel in the front and haven't broken them. I prefer a metalcore as a back wheel though.
The only ones I have heard of are bmxicans and pedal pushers for bikes, stick flippers, skatey fags and wood pushers for skaters and scooter fag, scooter rooter, snakes and pretty much every rude word for scooter riders.