I edited the shader to make the object seem more metallic in an effort to match my reference more closely. Here are some renders of the new shader in light and shadow, as well as the material attributes.
I also was able to render out a motion test with a RBD simulation from my effects partner, David, and create a composite that integrates the new renders. Here's my new motion test with the updated shaders.
A click-through of my breakdown and nuke node network can be seen below.