I learned that the placement of the sling attach point residing 90 degrees to my configuration, keeps the rifle more vertical when slung in a two point position.
Using an additional sling point that attached to the top of the rail, to me, for lack of better term, is like a wart on your nose, and more expensive.
I tried numerous mounts. Daniel Defense, Magpul, Wilson Combat, GGG, and Midwest Industries. MI included rail with sling mount.
I did not like the look of any of them. So the best approach to a minimalist hand guard, recessing the smallest available in place for an overall slim concept.
As crazy as it may sound, my dilemma of learning how it would carry the rifle was performed with several 1/4" zip-ties that have a loop formed into the head, then attached to my sling.
I cinched them tight in different areas on the rail until I found the optimal mounting point giving a fully loaded and ready to go configuration.
Placement of the IWC Micro QD socket was also in consideration of my Surefire M600U, of which I also designed a mount for that, that keeps the weaponlight inline and tighter than anything available.
Sorry, no more pics