Nice Work Rated 5 out of 5 stars

Hey this is a good idea and I appreciate that it's restartless.

One thing that would help to make it even better is to force a page reload when toggling between user agents.
NoScript and Cookie Monster are a few that have this feature. Perhaps you could grab the coding from one of them.
If I knew how, I'd tell you. :)

Thanks for developing this.

This review is for a previous version of the add-on (1.0.1). 

Good Idea! I will put it in the next release. Thanks!