This could have been an amazing plugin. Finally, the ability to completely control the urls of your forum! But alas, the author takes weeks or sometimes MONTHS to even respond to questions, much less fix the things that are wrong with this plugin. Categories do not rewrite correctly, and the author has shown no interest in fixing the problem.
Also, he hasn't even taken the time to update the plugin version here on xenforo, so that should tell you something as well. If this was a free plugin, I really wouldn't complain, but the fact that it's $30 and comes with almost zero support is irritating.
I'm getting pretty sick of getting burned on XF plugins.