Well I took the bull by the horns, so to speak, and tested one of the "Personal Attendant" tokens which gave all the answers.
Clicking on the token first warns you that the Personal Attendant is account and character bound.
Clicking on the token puts a deed in your backpack for a personal attendant.
Clicking on that personal attendant deed gives a number of attendant types to chose from.
Clicking on the Attendant you wish to have, produces an attendant on the spot next to where you stand with various options on a menu when you click on that chosen attendant such as on Herald that I chose:
Clicking on the Herald Attendant gave me a few choices to make:
a. relocation of the attendant (follow me) (stand here and greet arrivals)
b. various types of greetings - a variety of greetings and sayings to chose from. No option to create your own greeting to visitors.
The tenant can only be placed in a house you own. Not sure if all characters on the same account can use that Attendant too. Hmmm.. will check it out .. right now.
Answser: No. Those attendants are bound by both character and account. I experimented with this one Personal Attendant Token on my primary account and primary character so it isn't lost.