Well, completely at least. Picture a 10x10x10mm cube, but on the top of the cube, a few smaller cubes peppered around the perimeter (like a castle).
It will start the at the same location for every layer during the large cube. Once it gets to the smaller cubes up top, it will move the Z down and continue the next layer where it left off, rather than going all the way back to the preferred start point. This is an issue since it will print on top of the previous location which has not had time to cool down, causing uneven prints. By moving back to a specified start location at every layer, I get much more uniform prints (Makerware does this innately).