[whpalmer4]

You and your husband can have independent OmniFocus databases. Set up separate user accounts on your Mac, and run OmniFocus in each. You both will get completely independent workspaces, and what one of you does will not affect the other. You'll need to set up separate locations for the sync directory on the MobileMe or other WebDAV server and configure each account to use a different one; if you are using Bonjour as the sync method, it will prompt you for which user to use.