That's odd, even your suggested Dispcal settings still didn't give good results, in fact probably slightly worse than my previous ones. Grays get a yellow tint (Slightly less so than my previous ones at least), 1 and 2 of the black level test are the same shade, 5 and 10 have a green tint, and 3-4 have a blue tint. Gamma was worse too.
For me, it also took around three and a half hours total.
Could there possibly be something wrong with the particular i1 Pro 2 that I have?
Here are images of the resulting gamma and RGB gray balance: