Let's get some feedback on this Magnetraction stuff. I am contemplating getting one but have some questions. Does it slow you down at all? How is it in a pipe (assuming good)? Is it hooky or smooth? I was turning through an Outside Magazine the other day and they said it was bad in choppy snow...True? Anyone who's ridden one let me know. There must be something sweet about it. I'll probably ride one first before taking the plunge.