Well it's certainly not an in-depth video on the tech, but Linus claimed on his CES coverage that it's perfectly fine to game on, despite additional processing required.
According to the manufacturer it's also cheaper than OLED despite the complexity.
And yeah obviously it won't kill off the competition, plain LCD will continue to be cheaper and OLED the premium choice for completely dark blacks - but it seems that this might be close enough to actual black to not matter, while being brighter and lacking burn-in issues.