Okay. I do currently run my old 1996 Martin Logan SL3 electrostatic hybrid loudspeakers with cone woofers on their sides (woofers outside), and a ML Cinema center channel in between. They sound great with all three tilted up about 20 degrees or so. My screen is 11.5 ft wide and the room is 12. No room to stand.
The panels are charged so I'm not sure why they must be in any particular position physically, aside from being positioned properly for the audience. This set up doesn't bounce off walls and ceilings either (or way behind you) and has worked rather well for years now. It's a front wall of clean powerful sound through good amps.