i dont love the duck in the middle of hsh. its too low output. i do like it in the middle with other low output single coil sized buckers. a buddy had cool rails neck and bridge with a duck, and it was really nice.
if i was going to use a duck in the middle, then i might go jazz neck, wlh bridge, and split the buckers in the notch positions. it wont be humcancelling, but i bet itll sound really good