Much easier to use than Navigate Up WE when you want to move to different levels. However the icon that's integrated in the url bar does not open the popup box to choose levels. You have to use the toolbar icon. So you will have 2 of these icons on your row which I think is unnecessary.

You should just have the integrated icon open the popup box; left click to go up one level, right click to open popup box to choose any level.

Unlike the green competitor, it is integrated into the address window