The thing with self custody lightning channels is that you can have forced closures and you are responsible for the funds and fees.

Fedi is a custody solution for small amounts. Mutiny also hasn't quite yet rolled out ln address which makes this all come together. So cashu still serves a great role here.

Currently I don't think fedimints have tokens like cashu ecash does, so fedimints will work for zaps with NWC but not currently like how you can text your friends sats as cashu tokens.