It's amazing how easily most manual transmissions can be shifted without clutching but it is not something you will learn overnight. When I was lots younger we kids would do it just to keep in practice. Did it regularly in a 1937 Chevy with a four-speed. Then did it a lot in my '63 Ford Galaxie with a 4-speed. Of course the Ford was all synchromesh so that made it easier also but it was fun to kick it into neutral, blip the throttle and then shove it into the next lower gear. It would be an act of kindness to your truck to use the clutch to shift the transmission and to downshift the two-speed until you get used to it. Upshifting the 2-speed is not difficult. Like someone said, operate the 2-speed button and then just let up on the gas, it should shift and then step back down on the gas.
