Wheelman, you should watch the video. The guy doing the demo is a lefty and is shown writing backhanded and keeping his hand and arm in the air to avoid smudging. Lefties back in the day were discouraged/prevented from writing lefthanded even up to the earlier 20th century.
As a lefty, the smudging really bugged me as it made my school projects look messy. Conversely, loved writing Arabic when I learned it later, since it's written the "proper way", from right to left, and is beautifully cursive. Like all languages should be :)