The real advantage of a duneable override is being able to shift under full load and being able to do it quickly under full throttle.
I dont know all the configurations but i have a neutral down 1-5. Neutral is all the way down, duh, clutch it to put it in 1st.
Once you launch, its WOT, hold on for dear life and just bang away at the gears. No clutch work or letting off the gas to
shift the gears. The duneable feature means that you can backload it (meaning, let of the gas and let the engine slow you down)
to a certain extent without tearing up shift forks.