I wasn't trying to make a judgment based on specific anatomy, just human anatomy in general...this isn't about the eye shape being proportional, its about when his skull rotates, and the cross-section of the sphere that makes up the eye changes perspective, the shape of the eye doesn't change at all. The shape of the face and the eyelids and skin that make the eyes generally almond-oval-ellipsoid-whatever from the front are precisely what make them pie-triangle-section-shaped from the side 
the eyes can be whatever shape you want, I could care less, but maintaining that shape through massive perspective changes seems weird to me, and distracting, when every other part of the face changes perspective properly.
EDIT - regardless if it was done intentionally or not, its a point of distraction for me that, in my opinion, detracts from the piece, style or no. Mainly because the teeth, nose and ears all shift and change when the head tilts, but the eye (and more importantly the entire eye socket) do not.
Ah, i see i see, fair enough.
