I've installed Families and migrated my family over, so that our personal vault on your server as well as shared vault.
I haven't actually deleted data from my primary vault - too scared of the process I guess. However now that my 1Password data is all server-based, is there any reason why I'd keep a local vault, or a vault on a shared drive? I'm not looking to do anything weird or terribly complicated; just want to make sure that I'm not missing an obvious reason, since it seems to be difficult to remove the Primary vault without reinitializing the app.
1Password Version: 6
Extension Version: Not Provided
OS Version: Sierra
Sync Type: Families