No I wasn't referring to the white monfilm. I love that stuff and think the opposite ie that it is more resistant to creasing. With the two laminates it actually feels less resistant to creasing. It is the main clear monofilm which is most susceptible to creasing during rigging - especially with the no-cam sails like the X-Type that have tight luff curves but not a wide luff sleeve.
I expect creases which is fine .. no worries at all ... but just didn't expect they would be very hard & brittle creases and eventually fail as has happened once so far. None of my other sails in the last 12 years has creased and eventually split along a crease.
Anyway .. I think I might just be imaging this assumption because with the 80+ views of my question, nobody else has commented and had a similar concern.