Hi Darren,
It is possible to connect the H9 as you described with the new routings feature. The "Pre/Post" routing allows you to select either the H9's Input 1 / Output 1, or Input 2 Output 2 as the place where the H9 effect will appear. That way, you can place an H9 distortion effect like CrushStation either before or after your other drive pedal.
