I spent a summer working for a drywalling company, and those guys can really book on stilts. The tapers used to go up and down stairs all the time, and I never saw one fall over. The bottoms are articulated with the feet and have spring dampeners, so you can litterly walk around on them. The other thing is that you can really move fast on them, as your strides are 6 feet long. You can get stilts are most commercial paint stores, but they ain't cheep, and take a lot of skill to use.
David Buzzard