Love these shorts, I have 3 pairs now! Indiana has no shortage of humid days where dew point and temperature nearly match, too that with being a person who perspires heavily and there is swamp ass galore. No short can keep up with that wicking, there’s no where for the water to go, but they have not chaffed me on 20+mile runs one bit! I also love the cut and fit. They have enough stretch for a post run yoga session and the higher waist is comfortable and not feeling like I’m spilling over the top on the occasional “poofy” day.
The only thing I might change is a small zipper pocket or key leash, nobody wants to loose their car key on a trail, but I have a feeling you have a performance reason for leaving out this detail, and I have other resources for this problem..