Well AL, I got the guage mostly for the engine temperature and coolant monitoring as I explained but for a few bucks more the second sensor came with it and I added it to the tranny.
So the unit, will monitor both ends and alarm if there is an issue when I am not looking.
It will probably never be looked at after I drive for a couple of weeks which is fine but in reality I want it as I would an idiot light, and a BUZZER, just in case.
With that said every situation that I encounter with my car, I find a fix, when I do, I try to fix it so that it will prevent it from happening again or I add it to my maintenance routine.