Ive been branded (back when I earned my stripes) and then years later tattooed, both times with the same exact design (the brand faded after a year or so). Ive never been marked by any one with some special "personal" mark or other non-generic mark or their name. I think its rather foolish to use a mark that is identifiable as someone being the property of so and so when one can do that so much more easily with a collar.