I’ve got the dGPU F16 and need to travel with both that and the normal/iGPU card- being I didn’t want the electronics exposed to whatever is in my luggage, I knocked out a quick shield that can be printed for it. I’m not claiming it’s pretty or the best thing ever, but it does the trick. You can snag the STL/scad at Printables .
See (the very very rushed) photos below for a sense of how it’s designed and works. Blue is the dGPU, green is the unmounted shield for the iGPU (it fits, I just didn’t take that picture).
Hopefully this is of use to folks