Yes, I have had mixed results with turning on light emitter for skin. It tends to cause areas to "glow" and I just havent generally been very happy with the results, (although in the above case it worked ok) I also dont like "gamma correction" I think it washes out the skin color and details. I like the darker shadows, I guess I tend to like the more "dramatic look"

To my eye the darker shadows help define form and texture, but of course as individuals we all have our preferences