All this debate is suggesting is that from a manipulative view point it is not a problem to have a pilot simply jump into the RHS and off you go. That is just one aspect of two crew airline flying. What about the CRM aspect? I had a Capt. who was RHS endorsed say to me that there was only one thing worse than flying with an F/O who will never get a command and that was flying with an F/O who already had one. Spoken in jest but a certain element of truth about it. It is recognised as a CRM red flag that if the cockpit gradient goes from right to left then there are potential problems.