Well, it arrived today just as it was supposed to.
I expected to have to put it together a bit, but out of the box all that I had to do was put the seat on and pump up the tire. I got it all set and tried messing with it in the basement of the house because it was raining outside.
I'm going to blame my ineptness on the carpet in the basement. Man, it's tougher than I had anticipated. Even though I'm relatively out of shape, I believe that I have fairly good balance...but on that thing I couldn't stay up for the life of me.
The seat is a bit uncomfortable, but I'm sure I can get used to it. I had fun while messing around on it though, so hopefully I can actually get good at it this summer. I think it will be a really interesting outdoor pastime.