I never thought to ask this question. And the answers are just as intriguing and then it comes down to Etiquette or personal choice. Oh my...... What to do?
This page shows all the logos on the first page on the left
http://www.zazzle.com/embroidered+shirts
On several webpages....they all agree that if you have a company name, put it on the left, and the person's name on the right. If there is no logo, for everyone who said the name should stay on the right, there was an equal number who thought it should be on the left. And the final answer is..... where the customer wants it.