1der, the Hi Jack is more or less safety precaution. We're just getting into overlanding and we'll be traveling mainly alone. This means I have to be prepared for situations where I can't just call someone or another vehicle pulls me out.
My rig is 2WD and the locker is ordered. Seeing the overall costs for the lift kit, tires, locker, compressor, rear bumper, ... the cost of the hi jack lift doesn't really matter. I understand your point and these jacks are controverse/ dangerous and anywhere between "I never go without" and "absolutely useless" :-)
So here are some pictures I found:
Skip the box, as I will not mount it on there but put it on my roof.
My main interest is in the height of the 2 stand going up, the position of the mounting points in z direction as well as the distance from left to right pole.
This way I can already prepare my jerry can frame/ holder/ mount and get it on asap.