Run the SPG behind your left shoulder.....You may need a longer HP hose, but you won't need a snap or 'D' ring ( if you want to keep the snap/'D' set-up you can get an 'off-set' D ring )....By running it behind the shoulder you can tuck it in the waist belt or let it hang so all you have to do is grab it w/your left hand for a quick look down at it........It's a more streamlined set up and one less snap/'D' ring....