Hi John,
No, I haven't tried it yet because I'm still looking for a "volunteer" horn. My wife (who is helping me look) almost had one last week. I will probably have better luck this spring when the garage sales "come to life".
I am really hoping for a Bundy cornet (my first horn in 4th grade). I think it would be "over the top" to have a scratch/satin finish Bundy cornet. Kind of like a $5,000 paint job on a Ford Pinto.
Leigh MacKinney sent me some Scotchbrite from England (the same 3M model and spec he uses on his Eclipse horns). The Scotchbrite he sent is purple in color.
All the best.