Anyone setup Netbackup in RAC and use RMAN jobs and not the Netbackup Job Scheduler?

Here is my dilemma.  I use the Oracle suggested Disk and Tape backup job in 12cc.  This will perform the backup on any node that 12cc uses to schedule.  However, if I want to restore or crosscheck the backups, I have to tell RMAN via an NB_ORA_CLIENT variable which node performed the backup.  Otherwise NBU won't be able to find the backups.  It shows all tape backups as expired.  Only from the node that performed the backup will it work.

I know that NBU says to use a VIP to do the backups from but that I think only works when you use the NBU scheduler.  Has anyone else figured out how to configure RMAN and or NBU so that backing up and restoring from tape is transparent?  And before you say allocate the tape channels to connect to all nodes of the cluster so RMAN autolocate will find the backups, the RMAN Oracle Suggested Disk and Tape method in 12cc hard codes the tape channels and you can not edit them to connect to all the cluster nodes.