I've got the noga arm attached to the RedRock M2 rails. I reversed the M2 plate that holds the camera so the noga is on the left side, the side the A1 viewer opens up. I also have the noga sort of resting on a Spiderbrace when I do handheld.
The Marshall is very nice, but a beast. I definitely think your going to need some rails if you don't have them already.