Okay, I tweaked Sam's face more to adjust for some of the changes (just a few sliders and a couple of CP's getting weighted differently) and put those changes on the version of Sam with the arm updates suggested by Mark Skodacek.
The roll of the forearms and biceps for setting up the character is adjusted using the percentage sliders in the "Rig_Components/arm_constraints_folder" section. This, as Mark suggested, would simplify the CP Weighting on the arms.
Also, the limb bowing has changed...instead of being affected by the rotation of the limb, it can be set to an amount of bend. That means that the amount of bowing would generally be manually adjusted through arcs, but it also gets rid of possible bone flipping during extreme bowing (at least that is the intent).
Knock him around to see if he breaks if you have some time and I'll start on the installation rigs.
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The next version is in this post, this one has been deleted.