I don't have it running yet but I am planning to write something where you have a vm you can connect to with the same/similar command syntax and it would pop up a window of some sort saying 'I received a request for password xyz, yes/no' this way you can have your main system and/or other vms have access to the password store in a controlled manner.

If you have this vm running an FDE install then it would make it also super easy to backup all your passwords, just shutdown the vm and copy the vdi, would only be a few gigs (don't need too much software in this install, just the base system, gpg and whatever ncurses daemon to listen for password requests)