That's an interesting plan SpongeSound! All I can tell you is, based on MY experience integrating the subs to seemlessly blend into each system could be challenging.
in my situation, the room layout dictated that I position my sub in one particular corner of the room behind the component rack. This made set up challenging! Every little adjustment to the sub required that I get up from the listening position, walk across the room, make the adjustment on the back of the sub, then walk back to the listening position and evaluate. Rinse and repeat over and over again.?
The SVS iPhone app makes it extremely easy to integrate because every tweak or adjustment can be done in real time from the listening position. This makes a HUGE difference. Everything else being equal, I would choose the SVS every time because of ease of integration, but that's based on my system and my room configuration.?
