I feel like this is going to be the thing to roll with in the future but, as I am building my cab right now, I'm just going to try and wire everything in a manner that allows for easy replacement of the LEDWiz with the Arduino solution.
But yeah, for now I'm pushing ahead with the LEDWiz setup with the non-PWM config file (whichever file it is that is believed to help with the stuttering some experience).
And, of course, I've subscribed the *hell* out of this post