Since the post was about privacy I'd like to point out that unifying the address and search bar means that you can't search through your history/bookmarks (or do keywords searches) without sending the information to your search engine (so that it can show result propositions) which is kind of a privacy leak IMO. Also when nothing from your history/bookmarks/keywords searches have matched in the awesome bar, it does act like a search bar. You just don't have result propositions as you type.