It will work fine. The only concern would be physical vibrations between the 2 cabinets and with the MoPads, I think you have that well covered. Otherwise, the subwoofer will not affect the center speaker's output nor damage it.
Are those Ref1.5s or 1.8s? I think they're 1.5s. I tried a pair of those. Even though I returned them, I thought they sounded quite nice. The low-end performance was both particularly surprising and pleasing. Very rich and smooth down there.
"All men are frauds. The only difference between them is that some admit it. I myself deny it."