I am in the SCA and they have heraldry exactly like the "protected" arms and at one point they would check to ensure that there was no duplication of somebody's real arms, now the SCA does not. When I asked why not the answer was that while there are laws in Eurpoe, no one in the SCA had ever had problems so they dropped the process.

England's Court at Arms probably is unable to protect Arms anymore as is is not a "Court" under EU rules. Scotland can but just does not, Germany can but does not bother, a case of someone falsely claiming nobility came up the other day and the German prosicutor just declined to do anything.

So there are protected things under law but you would have to moon the Queen while wearing someone elses' arms in Scotland to be prosicuted.