This interesting artificial skylight really does have great potential applications in areas such as dark basements without any real windows where it can be used to create a focal point in something akin to an artificial atrium. Or maybe even in a swimming pool that has no access to natural daylight. It'd be very interesting to see two or three of these in a row.
The only current drawback (apart from the price of 40-46K) is the fact that the 'sun' doesn't move so if you spend a lot of time in that area it could be like being in a time warp! If the designers can work on this so that the light source emulates the movement of the sun it really will be a force to be reckoned with.
Its another example of the type of exciting lighting that's been opened up by the advent of newer, more efficient LED lamps, so lets hope it gets the opportunity to develop further.