I was on one of the same trips to the Ilford factory and recall the discussion, which, when I was there, included the Chairman and the Sales director. There was a real concern of damage to cameras, and IIRC mention of someone like NASA having issues?
Originally Posted by Ian Grant
One only has to think of a over-vigorous manual winding-on when No 36 or No 72 has been reached (I've torn conventional film that way before I knew better), and you have a problem when the film stays put! Clearly Dwaynes have similar concerns...maybe overcautious, but they know their equipment, and I wouldn't be very pleased if my film were damaged because of someone else's PET film being spliced in the same reel.