It appears that you can - old post may provide some assistance: VirusScan Enterprise for Storage on NetApp
The following KB may also provide some additional guidance.
VirusScan Enterprise for Storage checklist for scanners supporting NetApp filers in 7-Mode Technical Articles ID: KB81982 Last Modified: 5/5/2016
I have allready read these posts, but i dont found anything about vFiler, so i think there is no difference between vFiler and non-vFiler.
I also have found a really good Guide from NetApp: http://static.ziftsolutions.com/files/8a16c27a4e0e96df014e1c57395d5fe4.pdf
its for clustered NetApp and McAfee VSES.