Yeah, the main problem with this approach is all the mouseless extensions I found for webkit (vimperator, surf, uzbl, etc) were built around Vim bindings instea

Yeah, the main problem with this approach is all the mouseless extensions I found for webkit (vimperator, surf, uzbl, etc) were built around Vim bindings instead of Emacs bindings. For some reason all the Emacs-centric ones (Conkeror, Keysnail) are based on Gecko. Maybe this is because Gecko's extension mechanism is worlds better than the one that ships with Chromium, (which requires you to recompile the C++ just to change the key bindings for menu items) and the crap extension mechanism bothers Emacs users more than Vim users, but it's a weird coincidence all the same. And it's always possible (and hopeful) that things have improved in webkit land since I last took a look.