Movers don't have a role in the air, hence no extra pay. You chaps might be doing a sterling job in Iraq but it is not a factor to get flying pay (the clue is oin the name). Do not insult the intelligence of any of us by claiming you form part of an aircrew, you don't.
The last I heard BA, Easy Jet et al were not desparate to loose all baggage, or leave passengers baggage behind in order to fit your DFs on, so why would we need to pay you more than LSSA when you are on ops?
A role can be found for you though, I suggest we cover you in tin foil and chuck you out when the RWR goes off. The RCS should be about the same.