The waveboards are great fun. We've used them to go up and down streets for 2 weeks now. They give a good workout and roll pretty quickly. In fact, they seem to roll too quickly! After an evening at Tabor, I was bummed from having to "jump and roll" so often after the board got really moving. It seems like turning to "carve" on a waveboard just doesn't deliver enough friction to slow you down. Carving then, is short progression from super fun to insane panic, then dumping.
Enter the Flowboard. Han picked up a pair of these for some fun downhilling. And man, they are perfect! Now, on flat streets they ride much more like a regular skateboard. But on hills, they allow you to really dig into a turn, and the sideward friction does indeed slow you down.
Pumping around on a flowboard is a bit tougher, since they wobble like the trucks are loose on a regular skateboard, but I've taken that challenge up on my calf muscules, which are always up for a workout. Riding down (and up) curbs is pretty standard. In fact, the flowboard is so similar to a standard skateboard, I'll probably use it a bit more than the Waveboard. But no matter, either is great fun!