Luggage cart offers more versatility
When you arrive to a campibng location, detach the bag from cart and use the cart for collecting wood or moving around a medium sized water container ..etc.

At home I removed the wheels and spine of my daugher's school bag and then installed on it a cut off 10 liter water bottle. It has become a useful and fun way to drag canned foods and other stuff from the pantry to kitchen or whatever