You have sender privacy with Lightning.
This feels like a solution looking for a problem. I don't believe that my atomic swap provider, nostr:nprofile1qqsqcdcltmv4qanpx3p7svcufdsg9rkk00x7l2sknra4e6wh...
Atomic swaps' low adoption is partly due to high fees on Lightning. Average LN transaction fees have been around 1.2 sat/vB in the last 30 days (source: Chain Signal).