Rated 5 out of 5 stars

+1 to add Included/Excluded Pages ASAP. Thanks! The new "Manage User Scripts" interface is great.

This review is for a previous version of the add-on (0.1b7). 

User defined includes/excludes

Well the UI will need some work in the future, but the feature is available now. If you open the options/preferences window for a user script then you can create user defined in/excludes here (and disable the script's in/excludes).