I've been using a single point sling in various incarnations over the years... first a c-biner on my shoulder and some paracord on the gun, then a homemade nylon affair and finally a CSM sling.
And to be blunt, I wouldn't be interested in your sling if it's in the style of
this. Why? First of all, that sort of harness is going to interfere with most LBVs and chest rigs. Second of all, with a tradiational single point sling, when you go hands free, you can just turn the gun "inward" and it won't bounce around. I can't see you being able to do the same with this one.
Cheers,