While playing around with sweeper, I figured out a way that I could emulate a building plug-in from another program I have, and I started laying it out in tutorial form. I had wanted to get it completely finished over this past weekend, but I had to stor short of the roofing section. Since I won't have time to work on it again until this coming weekend, I wanted to give everyone a chance to take a look at what I've got so far, and make any comments or ask any questions you might have.
Although there are other ways in which sweeper could be useful in the creation of buildings ( duplicating windows on a path, for instance) there is only one step in this tutorial that requires sweeper, and I'm fairly certain that it would work with the demo version, so don't let sweeper scare you off if you haven't bought it yet.
Anyway, have a look, and let me know what you think.