The email name gets moved above the Line (to the menu area of google links); and the search bar moved down along the Buttons as the picture is shown; BUT it covers the settings buttons on the right panel you have to re-size the window so it doesn't block the buttons.
Doesn't work properly with current versions. I haven't tried the "basic HTML" gmail layout but in "full" layout all the essentials, like buttons for message delete, archive and other actions get hidden. Gmail settings button also gets hidden.
I love the idea of this add on, it makes sense to gain the space but the search bar is continuously in view, it doesn't move with the rest of the page. Until it is fixed I will not continue using this add on.