Well, if pre-release seeds have anything to say, then the next publicly released version of Safari will have tabs, much like Camino does now. And the next version of Camino will have a bookmarks window much like Safari's instead of the drawer. (This change is already in the Camino nightly builds.)
It looks like the two are getting closer together rather than further apart. The big difference remains the rendering engine. I (personally) prefer Safari's look to that of Camino... but its largely subjective.