Takes a few nostr clients to support that and get good feedback, others will follow the suit/nip.
It may look like in the UI (skipping the onion address part);
⚡username@🧅
Discussion
They already support it if you run the wallet client behind tor.
Examples:
* alby in the tor browser
* any LN webapp (lnbits, RTL, thunderhub)in the tor browser
I haven't tested it but maybe using android LN apps with Orbot also would allow you to query onion lnaddresses.
That’s a lot of work to make every client do! Big lift leads to low adoption
How about this; no change on clients.
username~address.onion@torproxy.com
Basically torproxy.com resolves address.onion and hits the onion end point returning it's response.
Caveat; centralized tor proxies until clients embed it internally.