I'm not surprised that this method of writing didn't catch on, since it could be quite confusing. It would tend to minimize saccade distances when reading, but

I'm not surprised that this method of writing didn't catch on, since it could be quite confusing. It would tend to minimize saccade distances when reading, but the down side is that you need to memorize 2N characters (normal and mirrored versions) plus you also need to memorize which is the current reading direction.