WOW!! i just saw this thread now, and my jaw just dropped!! i LOVE the way they sit together!
I, too, have an oddly-shaped e-ring, also from Fay Cullen! At one point, I''d found a curved band, but I was worried about wear on my setting (yours looks nice and sturdy though) and also that the diamonds would distract from my e-ring. My e-ring has little diamonds in it though (my avatar), but this look of the diamond band with the ruby halo is just stunning. I liked your e-ring on its own, with the w-band the set is perfection!