I know if you go DEFO (Cargo) it's not a problem as I have several buds that are doing that and the reserves (flying). I think if you're a DESO you're SOL. Difference being US based for cargo or HK based for SO. When we did our tour of them (during a port visit) our guide was a retired RAN/RAAF who's their senior 777 Capt, and it seemed most everyone we met in the training/sim building was either RAF/RAAF/CAF/RZNAF/US Military.......