Possible to migrate from Cloudant to CouchDB and back?

[crowecawcaw]

This project has been a huge help for quickly getting a CouchDB based service going. Before I deploy my app, I'm wondering about what changes must take place to switch from Cloudant to CouchDB and vice versa after adding users with Superlogin. Would a _users database need to be created in the transition? Is it possible to sync CouchDB databases to Cloudant in a way that would let them be swapped in as Superlogin's database? I hope this makes sense. Thanks for your help.