This new format sounds interesting. I personally have been using a fairly cheap 48" 4K TV as my primary desktop monitor for a number of years, as that combination is effectively like a 2x2 arrangement of normal sized 1080p monitors.
It works well, except that it was basically impossible at the time to find a graphics card that could drive it reliably at 60Hz (I tried both a Radeon R9 270X and an nVidia 1060, both of which were newly released at the time). The 1060 is better in that it actually manages 60Hz, but only in YUV422 mode (which is mostly fine as I primarily do black-and-white code editing) and if I want to avoid YUV fringing, I need to run at 30Hz. The Radeon required me to use an external DP-to-HDMI adapter, which worked, but then I hit driver redraw issues, so I stopped using it within about a week.
But in any case, the biggest problem with a set-up like this is that it's so hard to go back to using a small monitor afterwards. Even dual-screen feels cramped afterwards!
It works well, except that it was basically impossible at the time to find a graphics card that could drive it reliably at 60Hz (I tried both a Radeon R9 270X and an nVidia 1060, both of which were newly released at the time). The 1060 is better in that it actually manages 60Hz, but only in YUV422 mode (which is mostly fine as I primarily do black-and-white code editing) and if I want to avoid YUV fringing, I need to run at 30Hz. The Radeon required me to use an external DP-to-HDMI adapter, which worked, but then I hit driver redraw issues, so I stopped using it within about a week.
But in any case, the biggest problem with a set-up like this is that it's so hard to go back to using a small monitor afterwards. Even dual-screen feels cramped afterwards!