This is a great thread - more convuluted than MoD purchasing policy. Is the following too simplistic?
AirTanker Crew Permutations
QSP with Tanker Experience Deployed ok, Civvy contracting no
JAR CPL with A330 time Deployed no, civvy contracting ok
QSP with JAR CPL All working for Virgin & Emirates
65 yrs + QSP & ATPL Needs a younger co-pilot
or a new category, JAR CPL, not QSP but RAF Reserves or RAuxAF. Deployed ok if crewed with a QSP, Civvy ok?