I cant imagine the way that sitting up against your lower back will be comfortable. It looks very good and screen accurate. I have something similar. I mounted mine in one of my old military vests. where the loops are on the back, that's where the aluminum harness is and I mounted a bracket that "T's" out to hold the JP. My upper body supports the JP and not just my shoulders. Also to consider is that my JP is very heavy. Good job! Any body know who has the divers belt buckle? Mine is close but not perfect.