Fiber cement is slower to cut and heavier to hang than vinyl, and most of the price difference between the two is labor, not material. It is cut with dust control, cut edges are sealed, and nails have to hit the right depth. The joints and trim are where a careful install separates from a fast one.
Behind it, the same rules apply as for any siding: house wrap lapped so water sheds outward, flashing at every opening, and soft sheathing replaced rather than covered. We photograph any rot we find and show you before we close the wall.