I ain't a doctor, but I have an opinion on this anyway...
I don't think that the vibrations conducted through your cheek weld can cause hearing problems. The reason? The entire head moves with the vibrations, and the eardrums move with it. No real shock to the drums.
The damage to the eardrums comes from the "overpressure" from muzzle blast. Wrenches those little drums around in their connectors.
So I would cease to worry about hearing loss from cheek weld, unless someone more knowledgeable corrects me.