Overwrite CCK userreference form to show profile field instead of username?

Hi there

The header actually says it all. Have any of you got an idea of how to overwrite CCK userreference form to show profile field instead of username in the select box?

I use emails as usernames. But I would like people to see the real names of the users they're referencing and not the email. Any ideas?

One way would be to use user_load one each of the uid's in the options array, but i guess that wouldn't be very good databasewise. So I'm thinking maybe i could include the profilefields in the sql-call in the _userreference_potential_references function in the userreference.module ?

Instead of hardcoding it to show the username, one could call the username template to display whatever field one prefers. Does this make sense?

All ideas will be accepted with gratitude :-)
Best,
/J.

Best,
/J.