In top of the screen you mean, I wonder how much a ceiling LCR will detriment the special effect in an ATMOS configuration, as you are losing important points of sound reference, unless is a big room and you are seated quite far from the screen, but if you are not interested in ATMOS I guess they will sound great.... But aren't these better suited as in ceiling LCR? That's how I'd use them, especially if I were using a TV over a projector. If I'm using a projector, then I'll have the speakers behind the screen.
I think these are incredible and would definitely be using them for my next theatre.