Sorry for the late reply and all, stumbled upon this thread and joined here just to help you out, If I just can.
There is indeed 10 bit (true, not frc) 144Hz 1440p monitors. Samsung's newly released CHG70 series does so! Comes with factory calibrated panel and all, even includes sertificates for that. (Note, you might need to buy your own cables, even included HDMI cable wasn't able to carry 1440p144 signal.)
E: oh sorry, I tagged the wrong person, not the OP. But I guess he'll get the info if he has notifications enabled.
