I purchased a IWC scout light mount, and should get it in this week hopefully. I mainly purchased it for the QD mount feature, first and foremost. From what I read, if you go the route of 1913 IWC mount, you can always take off the rail and have a regular scout mount, so it just gives you more options. I guess it all comes down to what you're trying to mount to it. I would imagine that if you utilized the scout mount solution, that the light would potentially be mounted closer to the gun's surface, which is usually more desirable.