Indeed, Evalu8ter.
Even if kept in a 'fitted for, but not with' state, the ability to fit AAR equipment into a Chinook, freeing up some of the rear space for more....'them' if doing long range covert insertions, rather than carrying additional internal tanks would clearly be of benefit at times. But if the RAF doesn't have a tanker which could refuel the Chinook, there's little point.
I'm astonished that the Chinook was withdrawn from MPA - it always seemed to be in great demand when I was down there. Presumably they were all needed to support adventurism in the Great Sandpit.