Wow, this little gizmo, if it works and it seemed to in the video, would be a great platform. Not that the other stuff isn't but it certainly gives pause to laying out a couple hundred for the other set up.
I'm sure it isn't NASA quality, but for hobbyists, it may be just the things. The discussion (brief as it is) says the unltrasonic is better for hard surfaces, and the laser for softer things, including cloth, snow, etc.
I'm anxious to hear from someone who has done a lot with the boards and interface to see how they evaluate the product and how easy it is to work with.