Just want to run this by some of you, at the present time when I climb a (Hill or Mountain) I let the Allison do the changing or down shift as needed, if it don't down shift at 1400 RPM I will down sh...
Certainly, one CAN just let the Allison "do its thing".
But, by definition, a transmission is REactive (seeing what happened behind you and the heavier the vehicle, the further behind you it looks because of MOMENTUM.
A driver can be PROactive-- anticipating what is happening in FRONT OF YOU.