The problems you will experience are the weakening of the paper from the absorption of water, (even atmospheric), over time. This water or moisture weakens the paper where it bonds to the foam as well as at the hinge line. Over time the hinge will fail or the paper will delaminate at the hinge allowing the control surface to flail all over the place.
You can water proof the paper with tape along the top surface of the hinge line and seal the hinge on the cutout side with glue. These help but you will need to check the water proofing for damage or moisture ingress from time to time.
With care the life can be extended for many years!
Just what works for me!
Have fun!