If the cloak is given out as a practical joke...then yes, the whole cloak would stop working.Although if the person that recieved the cloak passes it on to another person, telling them that the cloak has invisiblity powers, then the cloak would work again. Go to Comment
First of all, I like this idea a great deal. Bravo.
One question...since manfred already covered my other one.
What happens when the robe gets a tear? Maybe a rip from putting it on, or from a slashing weapon. Can the robe be restitched and still have the flawless appearances, or would the wearer only look half naked? Go to Comment
City, group, religion; every time a significant event happens to the city/person a new name will be given to signify the event. Could add the names to previous ones like a list of titles or could just be completely changed every time.