Me personally I wont be setting a 1sat/vb transaction anytime soon. Maybe ever. Those extra sats/vb I pay extra hopefully will save me time and headaches.
You can set 1 sat in whatever you want, But 1st, before you set it, just look on mempool 1st and look at how many transactions are at that time. Because, sometimes I ever look at 1 sat that only has under 500 txs unconfirmed, which means with 1 sat you only have to wait about 10 minutes to confirm.
Just save your sat.
why should be more if you can 1