Got mine today and seem to be decent enough.
I probably wouldn't take the Chineseum sling to hike the gun for miles on end, but as long as your sling mounting points are sturdy I doubt it's gonna just going to fall off when your using it at the range.I value my guns a little more than to trust a sub $5 sling to hold it on my shoulder.
More power to you guys that bought them, but I don't want to hear any whining when the thing breaks and drops your $600+ rifle on the ground...