I used to have a Samsung C27HG70 with an 1800R curvature that apparently follows the same curve as human vision. After about 8 months or so I sold it. I couldn't stand living with a curved display (although that wasn't the only reason why I got rid of it). It was great for first-person games (very immersive, it felt kinda like I was being sucked into the screen), but it sucked for basically everything else. Not to mention it uses a VA panel, and I am more of an IPS guy when it comes to LCDs (although there was no debating the superior contrast ratio of a VA panel, and the much deeper blacks, although "black crush" is a problem, getting rid of detail in dark areas). The curved screen did NOT help the sh1ttier viewing angles of a VA panel either. I've used other curved screens at friend's houses, including some of those super-widescreen ones, but I never cared for any of them.
Now this monitor here seems interesting, cuz you can change it from flat to curved. I would probably use it flat most of the time, and then make it curved for playing FPS games or whatever. Like Niner51 said though, "over time I would doubt the integrity of the panel." For this much money though, I would much rather get a huge LG OLED HDTV. In the end I have no need for a monitor that can switch between flat and curved. Just give me a flat monitor and I'll be fine 100% of the time.