Thats the "thing" for my driving situation doesn't seem like I need it at all. Also, I have a Banks Pedal Commander which really makes the truck way nicer to drive! (go back to stock setting and the truck's a slug) I'm also in Las Vegas, not Texas.....we have mountains here. The truck will downshift up mountains, but it did that when stock with 33's also.Acceleration and (likely) fuel efficiency will improve with a gear change.
It does not take much to hold top gear on flat ground. If you drive out of flat Texas to a place with actual mountains (e.g. to a western state) then you would notice more difference with the gear changes.