The theory is sound for one checkweld/muscle memory
I tried the ACOG/Dr combo back in 2000, and tried to make it work into 2002 while it works, it not nearly as smooth, or as convenient as a one place aiming system.
I ended up going with the ShortDot, after the NF just did not do it for me.
Now that I will be residing my ass CONUS, I plan on picking one up to see if its up to chairborne activities.

