I figured something that might be useful for some people. You can choose the side you want the male connector to be when splitting a model.
When you place your splitting plane, the purple side of the model will get the male connector, and the blue side the female connector. If the wrong side has it, flip the splitting plane 180 degrees and it will switch the connector to the other side. Make sure you are switching one of the two axes that flip the plane instead of the third one which will just rotate it and have no effect.