0xChat looks pretty awesome on the UI level too, first iOS app that looks sincerely made since Damus. No pushy onboarding, lean settings, and finally someone went with a semitransparent menu bar again.

Yep, they are awesome. I still need to integrate their voice and video calls with Amethyst. But DMs and group chats already work quite well.

Brilliant, is there anywhere I can find this explained? Thank you

I've looked into it a bit more and can see myself taking advantage of your nip but no common relays or relay implementations really support it right now so will just wait and observe.