There is an extension called "Contact Summary Editor" by colemanmw which enables users to see specific parts of contact based on the group the user belongs to. During editing you can enable which ACL group is able to see which Contact Summary Layout.
I am wondering if there is a way to overwrite this extension to be able to choose which relationship enables certain Contact Summary Layout. For example, if the user is the relationship with the "Contact A" and this relationship is called "Owner of", then the user can see the most informations regarding "Contact A" and so on.
Have any one stumbled upon Contact views based on relationships?