First of all We're running:
This Zimlet worked great! One of the employees we manage at our company didn't like the lastname, firstname organization of his contacts. He seemed very skeptical of Zimbra at first, because of this we've removed some of his fears.
Just a quick note, It didn't work with shared contacts, I'm assuming this has something to do with the Zimlet API and a sort of security restriction enforced on Zimlets, just a guess really.
@gettyless - I don't know what you mean by the interface. It's pretty straightforward and simple. I suppose a few more features could be added, but it does what is advertized, and that's all that really matters.
Thanks for the Zimlet, it really helped us out!