nostr:npub1ua7ld4as3dplpjfwdws9mk57y6cjrm4scxtcwhm825r7u02hul2qlmrrg3 Great question, I’m still working out the details and hope to have this laid out in documentation soon!

I’m thinking the former with ability to upgrade to encrypted mode out of band or send plaintext “sent you an encrypted message” dm.