'Wrong about "native color space is all you need." '
That is incorrect. To display the widest gamut of which the monitor is capable you should set, calibrate and profile, using the native primaries of that monitor. A wide gamut monitor may be advertised as displaying 95% of Adobe RGB, but what that does not tell you is that it may not be able to display the full RGB colour space in some areas, but may exceed that colour space in others. Restricting such a monitor to Adobe RGB does nothing to address the parts it cannot display, but cuts down the capability to display outside the Adobe RGB space.
Dave
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