Again, I'm not a fan of the non-standard resolutions including the ultra-wides. I still have desires to make gaming videos, maybe even stream, and so personally, I'd want something that will allow for translation to all the other 16:9 (or so) resolution ratios. If I played a game on such a wide resolution, recording gameplay, when viewed on a standard non-ultra wide, there would be those large black letterbox bars or the size would be stretched and that's even worse.
Surely is a beast of a monitor, with a beast of a price, too - IMHO the sweet spot for gaming monitors is around $350-500 and 24-32" with at least 144Hz refresh, and preferably G-Sync (cuz I know we both do nVidia GFX cards). TN vs IPS vs any other display technology aside, those are the numbers I personally look for when considering gaming monitors with good performance per price value.
Never done the research, tho - but there can be issues with *some* games if they do not support such a wide resolution, but luckily this is a rare issue... that being said, I'm a mainstream guy so I go for mainstream tech usually, talking standard 1080p resolution (my current gaming monitor) and maybe up to 1440p (standard, not ultra-wide).
4K is pretty expensive to run at high FPS, averages would likely be below 50FPS with my current setup, and likely will be for another 5 years - so 2K or 1440p are the only options I view as "the next step up" from 1080p Gaming Monitors, and either the same 144Hz (or higher).
Just my thoughts, I know we may have different goals or reasoning for what we want. I've tried wide monitors, was not much of a fan, and I've tried triple monitors and didn't like the non-uniform transformations when moving on the side panels, they never link up correctly or they skew the image and it just looks dumb to me.