I've been doing some work recently in Max and V Ray and I quite like being able to control IOR curves ala http://refractiveindex.info/ with matching curves. I came across this tutorial for achieving a similar effect, although it uses a Blinn shader. http://bct.me/tutorials/mini-cooper/. Has anyone had any success trying something similar with either the MIA or MILA materials? I realize the sliders are there for it, but I felt like I had more predictable results using actual curves.