I have one of the "plastic skin" installations on the Aero S2 that I bought some three years ago. I am told it was put on pretty much from new.
It has done the job well. There are no marks on the paint and I have heard some clanks which would have been chips otherwise.
It is on the lower front area (bumper?) the front face of the rear wings, running boards (several scuffs which can be polished off) and around the door handles.
The car is now on 24k miles and a good few years old (2005) and it is not peeling or discolouring. You would be hard pressed to notice it when you look generally.
I would seriously consider getting it again if I was to purchase a new Morgan. On my Mercedes the local roads have resulted in quite a few chips in the 2 years I have had it. It has the MB premium paint protector applied to it and this has made no difference.