|click to enlarge|
Each switch would need to be custom made for the floor plan, wiring the switches would likely be a pain in the neck, it would probably have to be back lit so you could see which sets of lights you were turning on when you entered a dark room, and using it would allow you to turn on lights in other rooms, which seems a rather pointless feature.
One of the basic principals of user interface design is not to redesign well understood controls without a good reason. I'm not sure I see a good reason, aside of aesthetics, for the design. I suppose it might, depending on its price, be of some interest for in hotel rooms where what switch controls what light is always baffling, or in upscale tract housing since that might offer enough units to make it affordable.
Still, it seems like it is placing looks over functionality, which I don't thinks is a good design strategy for something as utilitarian as a switch. Would you buy one of these things?