I switched to 
for private relays. Now you can configure private relays in damus android/notedeck and it will use those for private data like notes/issues. Should be compatible with amethyst.
If none configured it can encrypt the notes to public relays as a fallback.
Private relays are a bit better since your notes will have no trace on public relays
GitHub
nips/37.md at master · nostr-protocol/nips
Nostr Implementation Possibilities. Contribute to nostr-protocol/nips development by creating an account on GitHub.
feature I just added to notebook/headway:
by default these apps are local first so you don't leak private info to relays... but if you have a private relay on your relay list it will auto sync with that.
demo of this in action: realtime obsidian board synced on local network
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