I have two, sleep system bags. The first is black and has all the straps, around and up-down. I gave it to my daughter after the third fight with it!
Now I am using one that is a rectangle. much easier to get the blasted system into, not as tidy looking but it is quick and easier for me to load up.
I think it is all personal taste. I like things very neat and tidy, I hate fighting with things, the tube shape with all the straps was a fight to get the bag into. I am short, the bag is long, my shoulders dislocate, so pushing is not the best plan. I am sure other people do not have problems getting the system into its stow bag.