Originally Posted by
PHXflier
However, it is my understanding that to use an RUC the person in whose name the RUC is issued needs to use an RUC as well; it might even be that only the passenger on the same reservation as the PM can be upgraded with an RUC.
This is incorrect - RUCs can be applied to companions on separate (linked) reservations, and the Medallion member doesn't need to use one for themself.