Doesn't work. Though Classic Theme Restorer let us move the address bar to the bottom of the screen in Firefox 29, in Firefox 30 the address bar is now _hidden_ if it is moved with Classic Theme Restorer! Luckily I also use Vimperator and can get by without the address bar, but for other users this could be a pain.
Note also that opening Firefox 30 the first time, Firefox lost all my tabs (80+). I was able to restore them, though, from the ~/.mozilla/firefox/****.default/sessionstore.bak file. Just use a bit of Python to parse that JSON file to get the URLs out.
Still a pain, everything took over an hour of my employer's time, and I _still_ don't have a solution to the address bar issue. Some people use Firefox to work, not play with Twitter and Faceschmuck all day (social media integration features are the major new features in Firefox). Looks like Mozilla doesn't consider that. If only Opera supported Tree Style Tabs I would move back.