I would like the ability to have separate address books.

I started writing an app for ldap contacts, I got ldap working fine but I need the contacts imported from ldap in a separate group as my ldap doesn't contain some fields (skype etc) but I want it to update and delete fields and some of my contacts are in ldap and on my phone contacts with skype/gmail fields - I don't want to update my phone and lose those fields.
(obviously the same happens with sync-evolution, so I have had to turn off contacts for merging)

So I it would be nice to have a "google address book" "ldap address book" and a "local address book".
Obviously some contacts could appear three or more times but that would be preferable to not being able to use the address books.

At the moment I am thinking of having a separate application that mimics the contacts functionality, but the db is completely separate.
Not nice!

Or am I being daft and missing something obvious?