Mount CIFS share encrypted on RHEL7.5

We have a need to mount encrypted shares on RHEL7.3
I see it is being worked on by RHEL I need an update on when it will be ready to implement
KB for reference
https://access.redhat.com/solutions/3107351

I'm running Red Hat Enterprise Linux Server release 7.5 Beta (Maipo).
I am mounting with "mount -t cifs -o seal,vers=3.0" options. How can I tell if the mount is indeed encrypted?

TIA!