I have a Rog swift next to an overclocked DGM 1440 IPS, they both have small issues if you go looking for them, where as the TN can colour shift if you move your head up and down, the DGM has issues in the corners, particularly on darker content and as I mainly play dark games in a darkened room (not pitch black but e.g. Curtains drawn in day time), I find the Rog better colours wise for that type of viewing
Then add to that, every IPS I've tried (as well as VA and even other TN's) are not a patch on the Rog for motion clarity. I couldn't go back to motion blur.