If I recall from my youth the mighty VC-10 was originally touted as a possible tanker, bomber (84 x 1000lb bombs in pods & bomb bay), a martime patrol aircraft (might it have been better than a Nimrod?) & if I recall an AEW fit (I hasten to add as single role airframes). The last option was as a pax aircraft. I may well still have the copy of Air Pictorial detailing this somewhere.