The diagrams I've seen for Atmos suggest in-ceiling placement above the listeners, and this "on the wall near the ceiling" placement seems like it would be a compromise, and I wonder what negative impact (if any) that compromise would have on the intended Atmos presentation. In any case, I would bet it's much less of a compromise than the other Atmos add-on elevation speakers.
Keep up the great work, guys. Thanks for sharing your thoughts!