Feature Request: Switching hands when elbow bends in opposite direction

Is there a way to switch the image the hand uses (or use an image sequence to animate between) when the elbow bends the opposite direction?

The Arm IK works well, until it snaps the arm in the opposite direction the hand was not designed for, and then it looks like a broken arm and/or puppet-master induced torture (probably a smaller use case).

Is there a workaround to get this to work with the current build?  Something along the lines of ...

if(isLeftElbowFlipped == true) { showThisLeft }

if(isLeftElbowFlipped == false) { showThatLeft }

(etc)

The hand in question would look something like this when it's pronated:

Thank you!  The Arm IK is great! :]