I noticed something in my current project. If I set up a transform constraint, say for rotation, and give it a positive value, the constrained bone is displayed as hollowed out in the editor window. However, if I give that constraint a negative value, the constrained bone does not give any indication that it is affected. It behaves properly, it just doesn't give that visual cue.

Thanks, Nate! I've been quietly working on some things now that I've got a handle on the runtimes. I'll show off at some point.