Well., I'm not dragging this out '#cos I have better things to do, but I was always under the impression that you were not 'Qualified' to operate in a seat until F L Check. Up to that point the crew constitution should be TC RHS, not a bare-bones CPL.
You have introduced
If the pilot in the left seat was not fully type rated and was unable to fly safely from that seat then there are bigger issues here than who was sitting in the right seat.
, not me, which is somewhat irrelevant!