Excellent Rated 5 out of 5 stars

Quick, light, simple in use, does what it says, no side effects. Easily accessible when needed, not disturbing when not needed. Very ergonomic and complete functionalities.
The only thing I'd like to see improved is the animation, which makes me wait for the side bar to appear every time (albeit one second) and can be a bit distracting. Maybe a slide-in from the left would be better than a twist-in from the corner. For the more casual user, however, this poses no problem at all.
Worth 5 full stars. Thanks.