Been a couple of weeks and my initial feelings about them was bang on. I can keep them in my ears hours and hours, and they won't start causing aches or fall out my ears. Even while running or working on a car.
Sound is still quite annoying, never got used to it, but a week ago my workmate asked if I have tried out the spatialized audio, I hadn't because I thought it needed compatible music tracks. So then I tried that and I was amazed, suddenly gained a massive amount of bass to comfortable listening volumes and high vocal S'ses stopped hissing. Lost a lotta clarity from treble and especially vocals but I mostly listen to electronic music so it is a trade I am willing to make. And when listening to something else I can always turn spatializing off. I'm extremely happy with the AirPods now.