This is definitely a "developer's plugin" - not a plug n' play for those who just want to be able to push a button and have something happen.
That's the worst that can be said about it. It's a fantastic, well-documented plugin that opens up a whole new world for developers working with custom post types. Scribu is very active in the community and stays ahead of the curve in terms of WordPress development. The plugin has been around long enough to have a good core of helpful community members who are able to answer support requests as well.