Any suggestions on how to switch between Org projects? In this case, an Org project is a directory of Org files that, while you're working on them, you don't want anything from other Org projects to "leak" into what you are working on. I think thia ia basically having your Org (and Emacs) configuration be directory specific so that, when you switch in to a project directory, the local configuration replaces (or overrides) the global configuration and, when you switch out, the local configuration is dropped and the global configuration is restored.
Is this Projectile? -- David Masterson