I mean you would be using a live OS and set up a key on that instance so it’s always a new identity, if you choose not to persist it, that service just doesn’t let you message any other way.

It would be much harder to mix identity with your clearnet pgp, if that’s what you were thinking, as the machines would air airgapped or the other ones simply off if you are using the same computer to boot the live os

Any other configuration is just lazy