They can both work with the HQ ProgKey when it is built with 8 pins. With only 6 pins though, it won’t be compatible with both since the drivers use different pad layouts.
So far, I’ve been using an 8-bin type. It can adapt to every pad layout used so far. I hope this will be how the flashing kits work too, even if two of the pins aren’t strictly necessary. But I can also understand why Hank might decide to stick with a 6-pin version. It’s cheaper and easier to build, it does what it needs to, and other brands are not his concern.
But the details are not yet known for certain.