I use Firefox, I love the two search bars. ctrl+L to get navigation, ctrl+K to get search. ctrl+up/down to change which site I want to search, which saves me a good chunk of time in the long run. I'm not opposed to hiding them though, as long as they're still there and show up when I type my keyboard commands. I don't think the https issue is too hard to work around either: just show a lock next to the tab's icon.