Edit: I see people are already complaining that this GPU won't be upgradable. Funny that this was never a source of complaint in MBPs!
I would be hesitant to buy a monitor with build in graphics card if it's not upgradeable and substantially more expensive than one without a graphics card. The monitors I buy tend to last several generations of laptop hardware (currently I'm on a 7 year old 30" Dell 3008WFP that's still serving me great). This is connected to the fact that GPU's evolve much faster than display hardware. The iGPU 3 years from now will probably beat the dGPU of today and then you're left with a heavy, power hungry, outdated, more likely to break monitor.