I think it's great! I had a 60 Pontiac once with six horns on it. That's two from three different cars. Just happened to have the tri-tone of a locomotive. It was comical the first time I used it at an intersection. I had a green left turn and started to go when somebody ran the red and block me from turning. I laid on the horn and watched the ammeter peg in the negative while the horn werqed it's magic. Everyone in and around the intersection just froze. I made my turn laughing and almost in tears it was great. Have a triple air horn and two extra loud car horns on my MG midget. Used to have people try to take my lane on the freeway and I had to stomp the brake even when I was on the horn cuz they did not see or hear me evidently. After the new horns people reacted differently by quite quickly jerking the wheel and getting back into their own lane.
Being heard is great as is being creative. Pretty fine line between creative and insane though.