Actually I put them my tabs on the left (default option with tree style tab), as I feel that putting them at the top or bottom of the browser waste space. I put the tabs under the location bar out of convenience, my purpose was to look at the difference in the tab size.

In terms of intuitiveness, it actually makes sense to have the tab bar over the address bar and navigation buttons, as their content and functionality are specific to that tab, and not application-specific. That's the reasoning anyway.