Our local Southern California micro climate (≈3.5 km inland from the ocean) is too dry to support these primitive insects in most parts of the house, except in area of the bathroom. Since they don't carry disease and their population seems to remain small and stable, I don't worry about having to kill them, and consider them co-habitants. No evidence yet that they eat Epson inkjet prints!

I don't like hardly any of the arca swiss for anything. Guess I'll have to make my own

Do you have the right battery in there? EN EL 15B or later is required for USB charging. If you are using an earlier battery it won't charge.

The HP zbook aparently is not able to do it,,, My trusty old Thinkpad can charge it via the USB cable, no problem.
I'm using both EN-EL15B and EN -EL15C

do you think the D850 can actually take advantage of the faster cards? For me it's mainly not to be depending on the expensive Sony cards.

With the D6 I haven’t noticed any difference, except for downloading a card to your computer. CFE is significantly faster.

Firmware updates for D5, D850, D500 to support a.o, the use of cf express memory cards.

https://nikonrumors.com/2020/12/02/nikon-d5-d850-d500-dslr-cameras-now-support-cfexpress-memory-cards-firmware-updates-release.aspx/?fbclid=IwAR3I290zlY5y1U0w-JCvYvUgQ1obanaIIDwyvKafJRipjkmWG0PHndPXTmI

Not a rumor, they are actually available!
look here (D500 v.1.30): https://downloadcenter.nikonimglib.com/en/download/fw/383.html
and here D850 v.1.20): https://downloadcenter.nikonimglib.com/en/download/fw/384.html
and here (D5 v.1.40): https://downloadcenter.nikonimglib.com/en/download/fw/370.html

Ciao from Massimo