we have several users on mac's, pro's and airs mostly. We currently use a usb video card that outputs to dvi; these are extremely laggy. If this product delivers what it promises, they have just earned some sells.
As a caveat, i did some research on the max 10watts(which most laptops throw an error or shut down the port for anything that hits the .6a and up mark) and i just dont see how they could claim single usb operation if it always required 10. This is pure speculation, lacking the needed documentation, i would assume the optional power adapter peaks the display out at the full 10watts by increasing brightness. I guess i will see when it arrives.