Yeah, this is super-cool. I can do this with #nostr #safebox - the lightning address is also a NIP-05 address so you can send cashu tokens directly to another #safebox.
I also plan to make this capability completely invisible to the user - the sending safebox determines that the lightning address of the receiver is a safebox, so it will bypass lightning completely and send the tokens directly via a NIP-17-like transport.
The user won't even know that this is happening. They just want to make a private payment.
