Hi Steven, welcome to Trad Gang.
I've read of archers in the Middle Ages drawing to their ears, but I don't think that's commonly done in modern times.
Likely if you are drawing the nock all the way back to your ear, you are not engaging your back muscles. You could get the same power with more accuracy by drawing to a conventional anchor with a slightly heavier weight bow, and using your back muscles. The poundage would be the same at full draw as drawing to your ear, because you would be drawing a heavier weight bow a shorter distance.
With a conventional anchor, your feathers are in front of your face and can't cut you. People with a conventional anchor sometimes manage to cut themselves anyway, but at least not with the feathers.