Walk Around
Nice chat regardng steps.
Regarding automatic fold-up feature, that's a good idea, but I am of the school that says keep things simple. Automatically retracting steps would just add more electrical and air stuff to fail. But, I too am concerned about "pulling away with the steps down."
So, since I have started my conversion about two years ago, before driving my truck I am trying to get into the habit of doing a thorough "walk-around" before leaving. This is a good safety practice; check tires, lights, listen for air leaks, etc., etc., and check to make sure the steps are up!
I place a round platic container upsidedown over the gearshift when I arrive at my location. When ready to leave, it doesn't get removed until I do my walk-around. If I jump into the cab and intend to leave immediately, I go for the shifter and instead grab the plastic container; I remind myself its time to walk-around and be safe!
I have never left with the stairs down, yet!