If, however, I was a photographer shooting still life in a studio, for example, product photography for a high end jewellery company, then this is exactly the sort of technology that will work, and will give a resolution boost that may be useful. With a tethered camera, and possibly spending hours getting the light and reflections just right, the extra time to get the shot is of no consequence. Older digital photographers in that market will have used medium format scanning backs, so it's pretty clear that they have patience and that ultimate image quality may trump convenience.
The comments about beyer sensors is interesting, and may be something that the casual photographer doesn't realise. Camera sensors have a patter of red/green/blue filters over each site on the sensor, so if the resolution of your camera is 16mp, you'll have 16 million sensor sites, but each will only give you the level of 1 channel (red, green or blue) and the camera will interpolate the colour resolution across the image. By shifting the sensor across exactly the width and height of 1 pixel site, the camera can capture the correct colour information at the same resolution as the output image, and hence give better colour rendition.
As someone who normally photographs people, and often converts to B&W, this lack of colour resolution isn't important to me, but there are other people where this might be a significant concern.