I dont understand why people have a problem with carrying barrels in a backpack is unrealistic, while having no problem carrying a few full plate armor or arsenal for a small town garrison.
Because the line has to be drawn somewhere. Carrying multiple armors is believable, packed on a mule for example....or as long as you have the strenght. Doesnt have to be realistic, just believable.
Carrying dozens of huge barrels full of liquid is idiotic at best. Might as well carry a door, tables, ships, bridges, trees, etc etc...who cares anymore.
Again in the silly funny world of Divinity this works great though!