It seems that I'm having a little trouble with my color profiles. I'm losing some of the blue shades, for some reason. Anyway, I've put that on the back burner, for now.
Now that I have been able to calibrate my display a little better, I revised my config. It appears that mobius is now the better choice (at least for me). Definitely brighter than reinhard, which is something I've been trying to achieve. And for HDR stuff, I'm still using the Adobe color profile. The problem that exists with that is, it's too bright, and not in a good way (my profiles have the correct brightness, and are great for the SDR stuff). Lowering the brightness on my display 2 points, corrects that. So now I have great color mapping, with better peak luminance. If you'd like to give it a whirl, here's the config.
icc-profile=C:\Windows\System32\spool\drivers\color\Adobe RGB (1998) D65 WP 2.2 Gamma.icc
Most people's desktops won't be much brighter than 200 nits, so that target-peak is a good number. I was comparing HDR passthrough and this side by side, with different scenes. Aside from the extravagant stuff like the Chess demo video, I could barely tell the difference. And in one case, I actually forgot which was which (true story). Anyway, as always, happy viewing and I hope this helps some of you