When you set the usergroup permissions, it would be great if it overwrote the ones in the AdminCP. I've made a test category, and allowed almost all usergroups in it, and Admins as tech groups. But when I try to log in as a Full Member (which should have access according to vbsupport.php, categories, permissions there), it says I'm not authorized.
It would be good if the permissions you set up on vbsupport.php overpowered the ones on the AdminCP.
Other than that, *installed*