Nope, never covered it. Why? because it covers up the microphone and I can't hear as clearly. I pretty much always had my hair up. I did have some kids point it out to me, but over time you just get used to it. Just like people would point out when someone has been badly burned, bad acne, missing an arm, blind, etc. You just learn to ignore.
Compared hearing aids to HUGE bte CI...mine is probably MORE obvious cuz I have a "weird" thing on the sides of my head. I could care less. People find it pretty funny when I take off the coil and pop it on. Put metal forks on the side of my head. It ease their feelings about it, and I'm educating them at the same time.