As per the 'Consideration 3' in the following Kb, yes it will work.
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Important_considerations_when_setting_up_CIFS_and_name-mapping_in_clus...
To be honest, User-mapping can work perfectly well without any entries in the vServer name-mapping tables "provided both Windows and UNIX user names match". Then mapping will be transparent as default user mapping will be leveraged.
