Looks like I've been convinced....
Just now had a mad-scientist moment, though:
Buy running CTD 4WD.
Buy crashed Nissan Leaf.
Remove 4WD transfer case, make truck RWD.
Remove front diff, insert Leaf motor.
Integrate demand controller with RWD driveline torque sensing.
Integrate regenerative braking.
Presto! Hill assist with regen charging!
Please, someone tell me I'm insane and should NOT do this....