I was thinking of a centeralized single port between each tire. This is a clever approach to that to keep it off the frame (and out of rock damage).
Of course if I wheel in the winter with the wife and/or kids when they're young (and the wife is there to yell at me about keeping the kids warm) I'll be instructed to keep the cabin warm during the air up.... lol
I have one on each bumper but it's a PITA to figure out the "right" spot for them and out of the rock & mud. I don't think there is one great spot for them. In the cab the door has to be open, but you can close the doors 90%? Anytime they are out in the weather you might have issues. I had to change out my front quick disconnect twice in the 8 years my Jeep was driving before.