A bit more play with Physical Root node. Here is a render using all Cycles on left and Physical Root for skin (only) on right. The Physical node results duplicate a more natural translucence and scattering for the ears (to my eye). For La Femme the head material is also the face material-otherwise I might decrease the scatter on the face while leaving the ears as is.. One oddity-is that it seems that a lighter skin color gives MORE scattering, I'll post examples later-but I had to change the RGB attenuation from 3 mm to 0.5 mm to make it look right with the lighter skin color.