(Sigh!) My writing is never a modicum of clarity. But I’ll get there!
I was not referrign to a low Mass or to current usage. I was actually referring to a High Mass and the position of the deacon, and acient usage still preserved in the modern rubric. This ancient usage may or may not be present in modern churches depending on layout.
Putting it in a very simplified way, the deacon reading the Gospel originally faced the men. In a lot of churches of Rome this was technically South- but when the typography of the church was translated in Gaul, it became North. Some were unfamiliar with the reason for facing in a particular direction and merely faced that direction because it was the direction faced in Rome.
One piece of evidence for this is the Micrologus written in the 9th century- the author notes that the deacon is reading the Gospel to the North but he objects because this is the side of the women and not proper etiquette. The Roman custom, he says, is to read towards the South because that is where the men stand. The quotes you can find
here
According to the Caeremoniale, he indeed may. The Caeremoniale allows the reading of the Gospel at a lectern or raised ambo, where they exist, and provides instructions for each. If the lectern then the subdeacon should stand behind the lectern ‘securing’ the book to the stand by holding it on both sides- if the ambo, the the subdeacon stands behind the deacon, and assists with the incense, and turns the pages.
If the lectern or ambo facing the people, the the deacon may indeed read it facing them. There is a picture given in one of Dom Cabrol’s books showing the Gospel being read at an ambo, but the deacon is not facing North.
The reason for facing North is not given in any official liturgical books. Rather it comes from popular commentaries and catechisms which interpret every action in the Mass in a symbolic way to assist in meditation for the Mass. These were attached much later after the practice. They were not the reason for the practice. Foe example, where it was read to the South a different explanation was put forward- either employing the Magi or St. Philip who was told to go to the South.