^Hmm that would be nice and icbw, but I believe all the super duties have both manual hubs and auto lockers behind them. Although even my '13 model stripper with roll yer own window cranks had electronic transfer case switch.
It's good that the aftermarket is making a harness to disconnect the front axle in 4 wd. There's a kit for Ram as well that offers 2 low operation. Idk about the GM twins. Used to be able to rig the center axle disconnect to stay open for 2 low but haven't messed with them since the GMT 400 days.