I have been using this set-up for my single point sling use for a bit now. The folks who don't like the noise from the Magpul endplate can do this simple mod.

Go to the local bicycle store and ask if they can give you a free blown out inner tube. They are going to throw it away anyways. Cut a one inch length to fit over the chain on the endplate. The rubber drags against the chain and cut down on noise. No more clatter, and the sling can still be disengaged quickly by pulling the release as the rubber doesn't cover the connector completely. The rubber also rips away easier than if you taped the sling to silence it.
Give it a try

This sling is almost like the Magpul sling, but made by a different company : http://www.attackopgear.com/

Rifle and sling:


Closer picture of sling attached with the rubber cover:


Rifle specs:
Colt 16" upper with 1/9 twist
Surefire rail with Magpul rail covers
LaRue UDE stock kit and FUG
Aimpoint T-1 red dot sight and GG&G BUS
Gunfighter Medium sized charging handle
Daniel Defense QD sling attachment added to rail (works with the QD point on the stock when running a 2 point sling)