Oh I see what you mean by monitor setup now. The issue with the PG278Q's are that their border bezel (the plastic rim of the monitor) is really thick so you won't get the effect, as the plastic will show as black lines in your monitor setup. Instead, get a narrow-bezel monitor.
As I read, RoG Swift PG278Q is the latest yet to launch.. 120 hz, gsync enabled, 1440p, with 6mm bezel, 1ms. The only reason to ignore this monitor could be the bezel.. but 6mm is the least i found. Is there a similar quality monitor with thinner bezel than 6mm?
I see .. YAMAKASI CATLEAP Q270... but the bezel does not seem smaller than the asus.