It works well for the first few minutes, but starts to break down. Smiling, which makes your cheeks puff up and move the headset slightly, makes the display turn off. Lifting my eyebrows seems to also trigger the headset to go off. Looking up, or down low does this.
Lastly, after a few minutes of dealing with this issue, the display turns off and seems to be unable to turn back on unless you continue to press the headset against your face really hard with one of your hands. Which you can't do, since most games, you can't play with just one hand while continuously pressing the headset your face with the other.