Customize Nickname with shared roster

Hi,

I'm try to setup a shared roster for twenty+ users, problem is that
the default contact nickname, while readable, isn't what i want (fullname of users).

I'm already using a ldap server to authenticate, so i tried to setup mod_vcard_ldap
to give the fullname of the user as a nickname

{mod_vcard_ldap,[
{ldap_vcard_map, [
{"NICKNAME", "%s", ["cn"]},
{"FN", "%s", ["displayName"]},
{"LAST", "%s", ["sn"]},
{"FIRST", "%s", ["givenName"]},
{"MIDDLE", "%s", ["initials"]},
{"ORGNAME", "%s", ["o"]},
{"ORGUNIT", "%s", ["ou"]},
{"CTRY", "%s", ["c"]},
{"LOCALITY", "%s", ["l"]},
{"STREET", "%s", ["street"]},
{"REGION", "%s", ["st"]},
{"PCODE", "%s", ["postalCode"]},
{"TITLE", "%s", ["title"]},
{"URL", "%s", ["labeleduri"]},
{"DESC", "%s", ["description"]},
{"TEL", "%s", ["telephoneNumber"]},
{"EMAIL", "%s", ["mail"]},
% {"BDAY", "%s", ["birthDay"]},
{"ROLE", "%s", ["employeeType"]}
%, {"PHOTO", "%s", ["jpegPhoto"]}
]}
]}

This works for pidgin for example, but not directly. Ie if you right click on a contact and select "Informations" the
nickname is displayed in the box, and the contact list is automaticaly updated accordingly.
But this is not very 'userfriendly' and doesn't work with every client (gossip for example, pandion in scheduled test).

Is there a way ?