I had the same initial thought, Wayne but I simply cannot control the humidity in my cave so waxing is in the future for my parmesan.
No matter what I do, I run with a 58%, max, humidity and that simply will not work. I'll end up with an 8" thick rind at the end of the aging period if I even try not to wax.
So, early next week I'm going to cover it up. It might not be optimal but it's better than the alternative in my situation.