[Zope] SMB validation?

Has anyone managed to come up with a User Folder product that will work under UNIX that will allow you to use a list of NT domain users as a Zope userlist? I know about the NTUserFolder product, but it only works under NT. I've downloaded the smb validation wrapper for Python, and I'm about to (try) to hack the etcUserFolder product into an SMBUserFolder using this library, but before I do so, has anyone already done it? If so, are you willing to release it?