PP has 5 inputs two were required for the encoder one for the O'shite button and two spare (could be z and x home)
Loving the "O'shite" button, might have to get a few of them. Didn't think of running both from one card, would be good for testing to make sure it works ok. ultimately I would probably need both machines running at the same time.

Did you get Pathpilot working then?