I use the utility knives for cutting down boxes, because sharpening knives is not my favorite passtime and cutting cardboard is so hard on an edge. However, like you I’ll use most of my pocket knives to cut open boxes and will use them to cut them down if necessary. The only thing I won’t use for boxes is kitchen knives.
Drywall, on the other hand: I would never use a pocket knife for. It’s just not worth it.
I use the utility knives for cutting down boxes, because sharpening knives is not my favorite passtime and cutting cardboard is so hard on an edge. However, like you I’ll use most of my pocket knives to cut open boxes and will use them to cut them down if necessary. The only thing I won’t use for boxes is kitchen knives.
Drywall, on the other hand: I would never use a pocket knife for. It’s just not worth it.
Agreed on all points. If I was breaking down boxes often I would absolutely be using solely boxcutters for them and nothing else.