Metuckness -
You've hit on one of the key features of CIFS on NetApp. Once you create an SVM (vServer) you can treat it very much as a Windows file server from management point of view. CIFS shares have the same "dual" security as does Windows - Share level access and NTFS filesystem level access semantics, which you can mix and match in the same ways as you would on a Windows server.
At current levels of cDot (which you have) you can also establish members of the "Local Administrators" group on the SVM so in case someone does something really bad with file permissions, you have a user that can re-take ownership and re-establish the security you want - just as you would on a Windows server.
To the greatest extent possible, including honoring relevant GPO settings, an SVM can be considered a "Windows" file server when using CIFS. Once you're good with that, then the fun can really start.
Bob Greenwald
Senior Systems Engineer | cStor
NCIE SAN ONTAP, Data Protection
Kudos and accepted solutions are always appreciated.