To say they are not necessary because you don't plan on trying to stop on a dime is much the same as saying you don't need them because you don't plan on being in an accident!!!!! All of the components in a brake system are necessary pieces and need to be installed in the system. The braking system is not a good place to take shortcuts or try to save a buck or two.....
You're absolutely correct. But I think you missed the point I was trying to make.

I did a little light reading, (a couple of Motor Manuals), and I learned...
To an amature builder, the way the Motors Manuals are worded, one can be misled to the wrong conclusion. The guys in Detroit are not idiots. They knew what they were doing when they designed the valves. My problem was that I couldn't tell one from the other. I know what a combination valve is, but I wasn't aware that they made the valves separate. My brake system has two separate valves. One valve is plumbed from both sides of the M/C with one line going directly to the front disc brakes, the line to the rear brakes goes to a second valve and out to the rear brakes. From Denny's diagrams I can see that the first valve is the Combo residual/fail switch valve and the second is the proportioning valve.

I really don't need a proportioning valve as long as I don't jam on the brakes
Right...Is there a day when we don't jam on the brakes???

Sorry guys if my post misled you.