I love the idea (I use FFox with vimperator as my browser of choice), but the OS-X install instructions are too cumbersome at the moment.
https://github.com/The-Compiler/qutebrowser/blob/master/doc/...
$ sudo port install python34 py34-jinja2 asciidoc py34-pygments py34-pyqt5
$ git clone https://github.com/The-Compiler/qutebrowser.git