Thanks for the response (and thanks
for yours as well). I feel the same as you. I've calibrated sets before and I'm more about accuracy than anything. As much as it pains me and my OCD, I've been playing with the gamma setting for both HDR10 and DV and find that 2.0 seems to suit some material better. 1.8 gives way to macroblocking in darker areas of the picture, and I prefer not to touch brightness.
I also refuse to turn ALZ off outside of calibration. Doing so makes black bars grey and content, while a bit brighter, lacks punch. Contrast ration is definitely lower with it off as well, so you kind of defeat the purpose of HDR on this set at that point.
For HDR games, I'm finding 1.8 gamma works, along with keeping color at 58. I'm looking at getting a new meter and picking up Calman, but I'm still floored by the Vizio with the stock settings. Just going by eye, it's one of the most accurate, out of the box sets I've seen in a while.
And beard, your calibration settings look great on my set. I didn't use the grayscale settings as they had a negative impact on my particular set. I just wanted to say thanks for posting those!