Emulators that emulate the XE-1 AP

I've been wanting to try out the the XE-1 AP analog controller for awhile. But since it a little tough to get ahold of, I'm wondering if it's emulated through software. Seems like this works be a thing. I've looked on the Google and I'm not finding much. Anyone heard of anything like this?

I wonder if there is enough of a market for Retrobit to make a controller very similar.

I doubt it. But put my down for one.