Generating an offset is attempting to match the Tristimulus to the specific spectral output of the display, using the Spectro as the reference.
If there are presets within the Tristimulus for your specific display they will be potentially be better due to the original matrix calibration, but only potentially...
Just because a high-end Spectro was used to re-certify and re-calibrate the K10-A doesn't mean the presets are accurate, as that will have been generated at a different time.
And since they were generated has the display manufacturer changed the backlight they use?
However, using a cheap Spectro with a high-end Tristimulus is rather self defeating.
The i1Pro2 is just not suited to the narrow spectral bandwidths of wide gamut displays.
You really need a narrow band Spectro to make the most of the K10-A.
And yes, I will try to make the default to follow any thread posted to... I just need to remember to do it!!!