I once did that, but then it whacks you in the nuts when you run. With a one point sling your primary should sling cross-draw style to your off-hand side to make way for your secondary and keep movement free. I however do not like having my sling against my neck, but you also want it to slide freely through your gear.
Try this for right handed: (reverse for left-handed)
- run sling through your carry handle, inside right shoulder strap (over shoulder) and around across your chest and down to left hand side. From the other side (going left from carry handle) go under (or over/behind depending on rig) the left shoulder strap and under the armpit down to the left hip to meet with the other end. When you pull with moderate force, your sling should slide through your gear easily.
I’ve developed a new sport I call ‘Airhard’. It’s basically Airsoft, except while you play you must maintain a massive erection...