Went to Cribbs Causeway in Bristol last weekend, John Lewis had one in their tv area.
Didn't look too closely, seemed a lot of money for a small set and the mirror effect didn't seem to work completely, when the set was on it had a strange almost 3D image, like the screen was quite thick (depthwise) and all images looked like they had a shadow.
Can't quite describe it, but I would wait for the next incarnation personally, as and when (if) they continue it's development.