Besides I have worked at cinema 26 years ago and I have seen more OVERHEAD SURROUND than most have had hot dinners. UCI 10 screen tower park had OVERHEAD SURROUND in all 10 screens
(1 to 4 was small screen)
(5 and 6 larger screens)
(7 to 10 smaller screens)
All screens had EV speakers for stage LCR and Overhead Surrounds mounted to the drop down suspended ceiling above.
Victoria V 35mm projectors in all screens with cake platters with manual lens turn around for W/S and SCOPE
Dolby CP55 A-type and SRA5 Spectral Recoding for SR soundtracks. Basic amp set up and booth monitor for each CP55.
And I heard Overhead Surround 37 years ago with opitcal Dolby Stereo than most here would care for, Gamount/odoen screen 1 and 2 downtown Feb 1978 STAR WARS in two screens 1 and 2 for months and months and later in the year Close Encounters March 1978 in screen 2 with mothership calling pre-Cyberton from Overhead.
Moonraker Dolby Stereo in screen 2, June 1979 and Drax, was calling for gods in space "cyberton, cybertron". Drax, got shot with a dart by Bond, and sucked into outer space...
I have heard it all before. Only discrete 37 years later and its more like 2 1/2d sound rather than 3d sound as where is the Below surround channel for underneath the seating? I'd be wasting my listening time with £900 or few grand atmos avr. Maybe wait 3 years and see if Dolby release a atmos mkII for cinema and home?