Hello!
After a couple of updates to your very nice product (last version I tried was a 2.0 RC) I tested it again on one of our sites. The main problem this mod has or many people have with it (as far as I read this thread) is that there is no good and consequent way it handles internal URLs (links to php files, images, css ...). In many posts I read about changing image URLs and templates to include the forum URL to make things work correctly. But why go the complicated way and change existing templates and files that already work quite well? The only thing IMHO that has to be changed to make this mod run out of the box in almost all situations is an additional config option for the forum url and a change to the grps templates to include that variable and make absulte URLs out of the relative ones. This way the mod would work with standard vb installations as well as with most seo mods without additional modifications.
Consider that as a feature request!
(sorry for my bad english)