I think either would have worked, which is a testament to how well the photo shoot went. It also goes to show how much easier things progress when you have great reference material.
In the past, I have shortchanged the reference gathering process and almost without fail, there is some aspect of the final rendering that does not go as well as planned. Some of these obstacles can be overcome easily by drawing upon years of experience or other creative means. Other times I am forced to go back to the drawing board and either find better reference or shoot new reference to solve the problem. This one is going well so far. I will post the final art as soon as I finish.