To answer your question, both, it's only a (reversible) pickup swap. It does make me wonder about the differences between those pickups? Both very early 57/08s right?
and the other thing it makes me wonder, who pulled the pickups out of a Paul's 28???
I guess the thing that I'm on the fence about is a refin, and it's a pretty classic caretaker vs owner scenario... man doing that would definitely be an owner move!