You can also run some paracord from your weapon, through one of the shoulders, and down into the the vest disconnect.
When I had a CIRAS, I did that for a bit. You can kind of see it in this photo (The paracord is brown) -
When I had a RAV, I also used paracord.
And also a hook setup that a friend made.
At the time, they all seemed nice, but with a side opening vest, I'd go with the sling I designed that was inspired by the Blue Force Gear Vest Sling -
It spreads the weight equally among your shoulders.
I use a separate two point sling now.