Unfortunately the Apple store doesn't let you put any software on the demos in the store. I am hoping any nMP owners could give feedback as to whether the SwitchResX software that creates custom HiDpi output resolutions works with the nMP w/ 27" Thuderbolt Display. I'd be interested if a custom 1920x1080 HiDPI resolution could be created as it's what I have running on my late 2012 27" iMac. The software is free to try and allows one custom resolution (enough for this test). It seems it works with internal monitors but doesn't always work with external monitors. Thanks!