I'd prefer refraction, but either shader would work for the project. I'm not doing a super close up of V4's face. Would it help you if I posted a test render of the scene?

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8