I got mine today and have worn them for a couple of hours. I will be returning them eventually for a comfort reason not listed here (unless I missed it). Apparently I have a pointy head, and the headband bottoms out on the steel supports on my head. Played around with adjusting the earcups, but nothing made a difference. Pretty sure it would be very uncomfortable after 4 hours. 2 hours was OK.
Other first thoughts are that the sound is fine, but does not play loud enough (and I'm not a rocker). Left sound up all the way on most selections I tried, from popular to classical.
Noise reduction is impressive. Still not sure of the use case of that for me, but I did try it driving and maybe... (not sure if legal though).
Spatial audio? Well, I tried it on Netflix and Disney+ via my iPhone Mini and it works. But not a big deal for me, even if it worked on say my MacBook (I don't watch videos on my iPhone). In fact, I mostly don't like it and it triggered memories of disliking it in theatres too other than specific scenes that work well. For example, the Ride of the Valkyries scene in Apocalypse Now helicopters flying overhead. Kind of like 3D in that directors have a hard time using restraint and playing to strengths.
Transparency? You have to turn the music off to hear others clearly first.
The music does sound the same in all modes, however switching does reduce volume - I want to say about 5db - for a second before coming back up. Haven't seen that mentioned before. There is also a beep changing modes, but you don't know what mode you are in without either testing it (by saying something) or by looking at your phone. A different tone for each mode would be more user friendly.
The convenience of switching devices didn't happen to me as I was comparing how movies sounded on my Mac versus spatial on my iPhone. Apparently that requires the very latest MacOS, which I'm not about to do - will break costly software.
I think I will likely end up with Airpods Pro as the APMs have no benefits for me really. APP will be a huge step up from my wired buds - I've resisted so far as I gather lifespan is only around 2 years. Not returning the APM for a few weeks - I have AKG K361BTs coming and want to compare. No ANC, no spatial, fine with me.