MINI USER REVIEW-
Calibrated the monitor last night using an i1 display pro (just using the monitor controls, didn't create an ICC profile) and it went really well. Got a perfect greyscale result and the colours are great but not 100% perfect but not out buy that much to matter (the Rog swift is slightly more accurate) The gamma also is great on the 2.2 preset. It has nice shadow detail at 2.05 - 2.1 and then follows between 2.2 and 2.3 flat the rest of the way. The gamma in games looks very rich with great shadow detail. Black levels are not quite as good on these 28" TN panels as the Rog swift or other new TN and IPS monitors but are not really an issue. Screen uniformity is fine with no obvious issues that stand out badly on a black screen.
Regarding g-sync it works how it normally does on a Rog Swift. You do have to implement the 59fps frame cap for games as mentioned in my previous post to avoid an input lag penalty. Once done the input lag is really low like any gaming monitor, feels circa the 5ms range.
Response times are virtually perfect. On the default normal setting tested on the Blurbusters website with scrolling UFO's over various coloured backgrounds there was no issue with ghosting on any shade and no overdrive artifacts. Testing Far cry 4 also proved this to be true. Panning the camera via joypad showed excellent clarity, the best a 60hz monitor can be. A truly excellent overdrive implementation accross all shades.
The monitor is well built but not as nice to look at as the slim bezel Rog swift but it's by no means ugly. The power led is rather bright and unlike the swift it doesn't change colour to indicate that g-sync is on. You can go into the OSD of the monitor to check though where it tells you the resolution and hz.
All in all the combination of 4k, g-sync, great image calibration, low input lag and excellent response times and overdrive with a solid stand and design makes a very nice 4k gaming monitor and a great compliment to my Rog swift.