BB I am definitely mad, known that for a long time but I dont think I am bonkers.
That thread is interesting one as jag is suggesting putting speakers at 30 degrees in height which is the recommended for auro.
However I don't know if you have been to epic cinema but his facility is huge in terms of width and length but low relatively in terms of height with raised 2 rows of seating. I think 2 rows of 4 seats. So in that environments ceiling speakers seem obvious because of the coverage issues but he actually really likes auro as well I have read him write quite a few times. I wouldn't think it would work well in there but it obviously does.
The more interesting part is there are a few examples in there of people's lounges where they show photos. Both show just how hard it is to follow the atmos guidelines but also how people have got round it. They didn't just go 4 on ceiling because they felt they had to and I would hazard a guess that they get the damndest same effect from what they have done.
If you look up people who have used front heights they say they get a wider, taller front sound stage with more depth to the sound. So that is a big plus of using them in this orientation and is a good option especially if you have 3 low front speakers to go beneath a tv for example. In your case that might have been an option to have all 3 speakers the same height and vertical orientation but then enhanced with front heights to add height etc to enhance the sound stage. That is what I was asking Benedict_Arnold about but he installed his main speakers high.
Or if you sit short ways across a typical living room long through lounge type room there isn't the ceiling space but that's not the only option available. The auro layout is ideal in this situation.
The irony of my own listening room is I really do lack wall space due to a lot of acoustic treatment. The only usable space I really have is the side ceiling areas where dolby recommend placement - what's the irony of that