My initial feelings about Calligra on Ubuntu (Precise) are that it’s stellar. By the end of the weekend I hope have a better feel for what assistive technologies it provides, whether collaboration features are included, and what kind of community has grown around this project. I would love for example, if AftertheDeadline were turned into a Calligra plugin or extension.
(If you write or teach others about writing, please please take a moment to learn what After the Deadline can offer. It’s already powerful and is very extensible.)