Technically you can probably capture and deploy it in a non-resizable fashion (it will be slow since it will do a RAW capture), though I’m not sure if this will work reliably with such a filesystem.
It’s closed source and only available on enterprise, so I don’t expect any open source solutions to arrive any time soon.
This function is where it validates the username.
@kek can you share some examples that failed so we could potentially modify it?
It doesn’t seem difficult, but we need to know if it’s valid for your case.