Does it work well from a user experience standpoint? I am considering switching from my current provider to KeePass XC. Usability is important, I also need to share some passwords with my SO. She is good with technology and computers, but not a dev.

And it can be sorted alphabetically in all software. That’s a pretty big advantage when handling files on a computer

I live in Europe, but not in a EU country. Is there anything I can contribute with?

Banking compatability by country. In my experience even banking apps not mentioned also work. https://privsec.dev/posts/android/banking-applications-compatibility-with-grapheneos/