I just received my Centrifuge Sling the other day. I could probably make an entirely separate post on it, but since it was mentioned, I figured it was fitting. Previously, I was using (and will still use) an SOB B-Sling with the ALG QD mount. I don't care much for QD on the stock, so it worked well using the integrated QD socket on my Geissele Mk8.
Two things to mention about the Centrifuge Sling:
1) It does not come with QD mounts.
2) It requires much more space between the mounts to be effective at cinching tight.
The sling itself is made by Sierra Tac. The only difference between it and the Centrifuge sling is the little hook that allows it to cinch down to itself. IIRC, you can pick up a Sierra Tac for like $50, whereas the Centrifuge was about $70. Either way, the sling itself is very nice and the metal T-handle slider thing doesn't get in the way or bang all over your gun like I thought it would.
If you run a rearward sling point on your handguard, it may not be the sling for you. Thankfully, I had an extra QD sling swivel and a Magpul QD socket (which needs to be replaced with a MLOK mount). It works nicely, but FWIW, I'm not selling my B-Sling to buy more Centrifuge slings.