Tried the Impression PI HMD at CES 2016. It was able to place virtual objects on the desktop and allow me to look at them in video see through mode. Things did stay locked into place but update was a bit choppy like most AR demos. The painting in 3D space was interesting as I could look around the painting in 3D Google Tango style. There was also a quick demo of hand detection and gestures. Overall very interesting. I can see the potential but it still has a ways to go.