If it is being done to throw hundreds (I mean that literally) of batteries in a tiny compartment then yes. I use it only to make the vehicles more streamlined, the the clipping never goes to extreme levels. For example, I got a "build a base" contract. The top was a cupola and it's support "spine" was a fuel tank. There were 3 mk2 passenger modules, clipped just enough so they fit together, making it look like they were one room.