I’d just like to add that the various Hotknobs are a godsend to ‘syncing’ two parameters to identical values. Such as the Delay or Feedback A & B sides mentioned.
I’m using them now mainly as a programming aid, similar to the use case under discussion. But they can be mapped in a myriad of ways, to many other control functions.
One example: a physical expression pedal controlling up to 3 more sets of ‘expression’ mappings, over dozens of parameters.