Hey Radcliffe,
I was able to create a Point World Reference pass following the steps in the link (Thanks for the link, very useful info), in animation and still image, including the hair and the base mesh. Is this the result you are looking for?
In the first step where you have to select the objects for which you want to make a PWorld Pass, make sure you select the hair shape in the hair stack, NOT in the viewport. You don't need any extra node or extra steps.
Let me know if this works for you.
Attached Files:Jeordanis Figuereo (Product Designer. EPHERE Inc.)