I've been told that there are a number of pilots from SA who have widebody command (Bus) experience that have been accepted for the JQ Asia positions. Management plan for the JQ Aust pilots to "fill in" initially while these guys get their Aust & Singaporean ATPL subjects, then they will take over the operation.
Essentially, the JQ Aust guys who do the initial flying or conduct the Sim checks for foreign pilots are simply assisting management taking their jobs offshore.