depends on your camera's loading mechanism too. The end of the backing paper is not taped to the film as the start is. This means with auto loading like on a later rolleiflex model, you will most probably jam your film in the camera as the film will not follow the paper through the rollers but it will curl up somewhere in there.
Maybe not all cameras do this, but i think the chance is big.
Also, the spacing will be counted form the wrong side so when the two sets meet in the middle they will overlap or leave a gap of a random size.