Love IWC quality parts. I was going to go your way at first using the IWC Light Mount-N-Slot, but did not want to lose the first slot of the left side of my Magpul mid rail. It is more comfortable for me shooting in the offhand position with the QD Rotation Limited Sling Mount-N-Slot at that position, because it gives me a more stable platform using the sling. I have since become accustomed to pressing the light switch with my thumb from the MVG. However, still looks good to me!