It would also be useful for people that wear the separate ears with all the plugs and piercings that might not have a perfect match for their skin tone.
the customer i made it for wanted this look to work: from the front it looked good, but this was the side view: and here on my avi, so i could see it without the beard:
he asked me if i could get rid of the light spot in front of the ear. the only way for me to remove it was blending the head skin and ear skin together, so i did and that's the story of the ear blender