Check out the options Rated 5 out of 5 stars

Looks like many ppl here would prefer some icon in the address bar instead of the space wasting toolbar. Actually, it's already possible to have Operator this way:

In the options, you can enable the address bar icon and afterwards disable the toolbar via the view menu. Should be the default, though.

This review is for a previous version of the add-on (0.9.3).