Hey congrats DonTom.
It is funny though, whatever motorcycle a company makes, a new owner with start to modify it as soon as he gets home. 
Yep, but usually the very first thing I do is change the horn. I now have two motorcycles not requiring such. The Harley and the SS9. The BMW came close to being loud enough.
The Zero horns were the worse of all. A yell would be a lot louder than the little "beep beep" from the Zero. But they did improve the horn on the SR/F, IIRC.
Also, I like the horn to work when the ignition is not on. Can't do that with the Zeros without a big hassle. I have had one accident caused by being parked all because I had the key out and the horn didn't work. I have also prevented such from happening after I modified the horn.
In case you wonder how that happens, on my BMW, I stopped behind a van near my house (then) in South San Francisco. I stopped to adjust a mirror or something like that. I turned of the ignition and as soon as I did that, the van started and reversed into me in about a second flat. I didn't even know there was anybody in it. A working horn would have prevented that. The other time I was in a parking lot, and I prevented somebody from backing into my bike right when I got back to the bike buy pressing the horn. No time for key, which was in my pocket.
I cannot think of a single reason why a horn should not work with the key out and ignition off.
But you're right, I have never owned a motorcycle that I did not want to change or add something the day I got it home. I think the only way we can get a bike every way we want is to build it ourselves.
-Don- Auburn, CA