It’s how the police view you anyway.

Yep. I share it between all 3 major OSs

For things like this, I create a small container file on my drive using VeraCrypt. Unlock it, it mounts as a drive on my machine. Open the journalling app and the files are there in clear. When finished, unmount and they are safely encrypted again. Not even any meta data to speak of should someone browse my file system.