airless spraying ceiling paper?

I've a very large HSL (2 staircases!) starting next week in a old period property, there is a large and elaborate cornice and the ceilings are papered, I will spray the cornice one way or another, possibly xvlp but I was wondering if it was worth getting the airless out to spray the cornice and papered ceilings.
My question is has anyone sprayed old papered ceilings? Are there any potential pitfalls?
They have had multiple coatings over the years but are generally in good condition.
Thanks