I've been to both those sites before, they're awesome!
I will soon have a K2 Razorback Team frame, so it won't be that heavy, however it will have back suspension. So it will be pretty hard to learn on I guess. When my bike snapped, I was playing around in the shop where I brought it to, standing on the front wheel and holding onto the handlebars (that's all that existed on that half of the bike!), braking and bouncing around. It wasn't all that hard to do even though I couldn't do it, so I guess all I need is practice! Cool.