The omnibar is less convenient than Google Chrome: it appears that pressing DELETE does not actually remove a search suggestion from History. Instead it seems to be ranked down. This is not useful, there should be a way to completely remove a suggestion (unless it is currently a bookmark).

In Google Chrome I navigate with the omnibar so much, it was the game changer for me when Chrome was new. The ability to quickly recall any page I visited before. Coupled with the ability to finetune these suggestions by removing unwanted entries.