While the Eizo CS models do not create a 3D LUT for the display calibration, an .icc profile is created which does measure the state of your display. When using Photoshop, it’s color management will adjust the image to match the state of your display and show accurate color.
For video color correction, the video apps are not color managed like Photoshop, and having an accurate 3D LUT stored in the display is a big advantage.
I have an Eizo CX display that stores only a 1d LUT + matrix. For video work, I’ve created a 3D correction LUT which is used in my video software to correct the image going to the display and this works very well.
But for Photoshop work, I rely on the .icc profiles and Photoshop color management and it works quite well.
So, if you’re not using video color correction software, I would not be too concerned with the Eizo CS not storing a true 3D LUT.