Controlfile backups interchangeable within primary and standby?

Data Guard Concepts and Administration says and I quote "Backups of standby control files and nonstandby control files are interchangeable. For example, you can restore a standby control file on a primary database and a primary control file on a physical standby database. This interchangeability means that you can offload control file backups to one database in a Data Guard environment. RMAN automatically updates the filenames for database files during restore and recovery at the databases."

https://docs.oracle.com/cd/E11882_01/server.112/e41134/rman.htm#SBYDB4848

Does that mean backup taken on the physical standby database of the controlfile using "RMAN> backup current controlfile;" and then doing restore operation at the primary database using "RMAN> restore controlfile from '<backuuppiece generated by the first command>';