It's a cool experience. PostmarketOS is kinda... jank, I suppose, given it's Alpine roots. I get the need for a tiny OS for all the hardware PostmarketOS runs on, but on a phone like the OP6 the hit to features and stability is somewhat unfortunate. I'd be very interested to see how different (better, hopefully) the experience of something like Mobian w/ GNOME mobile would be...
https://cdn.fosstodon.org/media_attachments/files/109/666/067/272/017/950/original/1329ff96b57b1be0.png