[Evolution] shared LDAP addressbook

[Henjo <henjovr gmail com>]

I am setting up a system with which I can use 1 addressbook for all my 
contacts (for email, addresses, some custom fields).
This addressbook will be shared with multiple applications, like 
Evolution, Thunderbird and a custom aplication.

Which schema is best to use?
I am using organizationalPerson +inetOrgPerson right now, but that has 
the disadvantage that the email fields in Evolution + Thunderbird are 
not similar. The primary email address is, but if I add more email 
addresses with Evolution (for work, home, alts etc) they are not visible 
in Thunderbird.