And now they have a UV Coated 4x4!
DianSheng saw that no one was really UV coating anything but 3x3s and the occasional 2x2, pyraminx and skewb, so they decided to UV coat a 4x4 and see what happens. The UV coating does change the feel quite significantly, but it is the same cheap design which works reasonably well but is nothing special. You can buy it here