Recently learned: the warm moist environment created by wearing an ear mold all day isn't really a concern (outside of an external ear infection, which is normally limited to itching) unless you have a hole in your ear drum. If the ossicles behind that ear drum are reasonably intact, then ossicular reconstruction is unnecessary, and you can get a simple myringotomy (edit: myringoplasty. The exact opposite of a myringotomy) under a local anesthetic. If you've got an implant on the other side, then the ossicles become even less important, because you're mostly using that ear for localization and for the feeling of acoustic balance.

This bears further investigation.