Nice, I'm doing something kinda similar with 2 rack mount Sansamp RBI's.
I have one running a clean tone with no dirt and a slightly scooped tone, the other running quite dirty with a mid boost for a more aggressive tone. Both RBI's are always on and bridged into my Crest Prolite 2.0. Super happy with this rig! I'm able to get a nice fat clean tone but also able to have the aggressive OD tone without losing any low end.
I'm considering swapping out my RBI for an RPM so I can get more of a distortion instead of slight OD but the RBI's are working great for me right now.