I recorded myself masturbating to test the facial capture and honestly it's not that good. It's really bad at tracking movement if your face isn't directly facing the screen, so moving your head side to side or looking around is not good. However it's really good at picking out your eyebrows, mouth and face outline, but it still has trouble translating its movements. I thought since I have long hair I'd need to put on a hairband to block my hair from covering my eyebrows but I didn't.
It has a lot of difficulty picking up frowns, but it's really good at picking up smiles. Eye movement is a bit awkward and picks it up a bit too easily. Frequently it'd show my eye twitching like crazy spazzing out, or I'd close my eye all the way but it'd have trouble detecting a fully closed eye. For some reason it has trouble with closing only one eye and trying to wink will cause it to spaz out a bit as well. Also during video related I took, it lost track of my face twice and I had to reset it.
With some improvements it'd be good, but right now it's simply not good enough for what you'd want to use it for.