I used to own a book on Rutan aircraft by Don and Julia Downie:
http://www.amazon.com/The-Complete-Guide-Rutan-Aircraft/dp/0830624201
It has been many years and I can't remember if this had a chapter on the Starship or not. I (seem to recall) that his prototype was a slightly smaller version that performed very well, etc... but then the production version was bigger got loaded up with FAA regulations and got big fat and heavy and the production versions all underperformed.
Still very cool looking