Kitbag: "...use of an ORP by AT at a RW base shouldn't cause too much hassle to other users should it?"
No hassle at all whenever it's been done at Wattisham.
At Wattisham the taxiway LCGs and widths are OK for larger aircraft. They are also maintained to a good standard and swept regularly, as is the runway.
Unfortunately a new hangar was built after the RAF left which makes access on to the main apron a bit tight for anything larger than a C130, hence the use of the ORPs for parking larger aircraft.