Here is my report using i1DisplayProPlus with Autocal and modded SpyderX dll:
I managed to get very good results (imho) using SpyderX for gamma and i1DisplayProPlus mod for color after some hickups trying to find proper placement to i1DisplayPro meter and when I forgot to disable screen correction. In i1DisplayPro manual there is a guide to place meter as close as possible to screen and I placed it closer than 30cm which Autocal advises. This resulted too much red. Then I placed meter at 30cm and result was much better. I used burst mode which included delay around 1.55 s.
I used this workflow: first gamma (quality) with SpyderX for SDR, aperture 0 (ref.point), then -6 (in use), both with gamma 2.2, low lamp. Then color with i1DisplayPro for SDR, low lamp, aperture 0 and -6, after which color for HDR, low lamp, aperture 0. Inbetween these calibrations Log to check that results are consistent. So, two gamma calibrations, three color calibrations.
After these I had to calibrate gamma (aperture -6, Quality) again with SpyderX because there was some minor gamma drift after color calibrations.
I also noticed that it is better to do color calibration twice in series and save result into JVC after second one. Color temperature (white and grey) was closer to D65 this way according to Autocal, don't ask why.
Good test films with HDR are Bladerunner 2049 with low maxCLL/FALL (TO High), Aquaman with high maxCLL/FALL (TO low) and Passengers with SDR. I used also S&M UHD HDR Benchmark disk but mostly only demo video.
And remember to set TO with proper screen settings after HDR calibrations. I noticed TO will calculate corrections again. Hopefully my report is useful to someone.