I guess it was the solid step I saw on a 5th wheel a couple weeks ago. It is mounted vertically inside the door to the threshold. Open the door, unlatch it, and pull it down. I'm not sure if you could reach the latch on a TC with basement.
My scissors steps at OK. I assume the previous owner drilled and tapped the "hooks" on the camper part and the top bar on the step. Seems secure enough with a bolt in them. I wrap a cable around them with a carabiner when travelling.
I still think if you aren't happy with scissor steps, make your own steps out of plywood, cover with astroturf and store inside the camper while travelling.
