Sorry for the delay, we are in Houston, TX and it has been a bit crazy here the last few weeks.
I have tried both in VB&R and by client and according to support it won't work. I haven't tried installing the Linux client on both nodes, but I'm not sure how that would change the outcome.
My limited understanding is that the file system is designed to work around differences from each node by logging changes made so that any active node can complete a transaction if a node were to go offline. Obviously it is not that simple with snapshots or VMWare would likely support it as well. I'll look out for v10 and see if that will provide a way to backup this system.
For now, I have had to go back to a single NFS server with an ext4 partition. This means it will be an act of god to schedule a reboot or any downtime, but such is life. Thanks for the info!