That makes sense for stereo and all that.
I did some experiments and although this camera didn’t work with the realsense driver, it does do ir, and as far as i can tell it does it in much the same way as the original kinect (the one for the 360). There are a set of ir leds around the sensor, and when using the ir video device these leds strobe. This makes the camera capture a sort of black and white heightmap: 
The framerate isn’t very good (a few Hz at most), and shiny things like glasses make the image all sorts of weird, but it definitely can do it, and it can do both an rgb stream and an ir stream at the same time.
With the right kind of opencv magic, this could definitely be something, but i get not wanting to spend time on it when there are actual depth cameras available.
This is just an IR image. You will need 2 of them (left+right) for the stereo. And then you need to calculate and build the depth image. This part is done in camera's own SDK (for example RealSense, Leap Motion).
Found another possible alternative: MYNT EYE. Also some people are modded PS4 camera to make it work with OpenCV as depth camera.
