i believe part of the beneifit of using cashu in this regard would be spreading your sats among different mints so you don't have to trust 1 mint with all of your nuts. you could put 1000 nuts in mint 1, 1000 nuts in mint 2, and 1000 nutes in mint 3 and have a total of 3000 nuts in your wallet. you can't do that with a Lightning wallet. you'd give 3000 sats to one single custodian.