Again see my standard answer.

Slings are like underwear. Boxers or briefs? In my case depends. Use what works for you.

As stated, mounting to the butt end of the stock keeps the gun tight to your body. Its too tight to my body. I need a little freedom and I don't like the stock getting wrapped up in the sling which sometimes happens.

If you use a receiver end plate, the gun can be just as tight. But the end plate will allow the sling to pass under the extension to the other side. If you do shoulder transitions this is a must. If you don't do transitions, then nevermind.

I now have five guns set up this way. A receiver end plate or similar device aft, and a QD swivel of some type forward. I then insert an IWC 2to1 triglide on the sling near the receiver end. This way I have all the security of a two point sling and I never get hit down there. If my shooting gets more dynamic, and I need the freedom of a single point, I unplug the front end, plug it into the 2to1, and now I have a single point. I can do whatever I want to do with the gun, and never change slings or hardware.

I should also point out that an adjustable sling is a must for this. Either the Gear Sector GS2P or the Vickers VCAS work well. There are of course other options.

I now have four Noveski end plates, and one Tango Down PR4. There are similar options out there that will get you the same results. It costs a little bit more to set up, but the sling options it gives you are worth the cost.