@JeffG how do you feel about reusing the MLS spec for other subprotocols?, like we define a NIP for simple notes, then notes clients create a group with all your devices (assuming it's just for personal usage and only you will see your notes) and use some selected relays to save and sync your notes encrypted using the group key.

Possibly. He built these, I did the design/UX, because nothing else suited our needs - sound familiar...? If he does not have time to do this himself, can he share the code for others to leverage for nostr? Let me ask him...

So he says he does not have time to port them, but the code is open source and he'd be happy to share.