So your saying you can't have a nice switch AND use a diverter?

Or am a mis-reading your comment?
I modded a nice joystick handle from a JD110TLB to my tractor before they were widely available like they are today, either UP or DOWN switch activates the diverter, the single switch is for a horn I added. All switched through relays.
View attachment 456329 View attachment 456330 View attachment 456331
And the diverter kit we sell includes a small momentary switch that is attached to the joystick handle, it can be positioned wherever the user finds it most comfortable.
View attachment 456332 View attachment 456333
Edit: Not sure why the two pics aren't showing but they open (here anyway) if the link is clicked.