It's funny, on all large multi engine aircraft I worked on, the principal is the same. I like this situation as your hoist is actually attached to the airframe...
yes be under no illusion in practice things were rarely done by the book, i've read through the manual and there're so many gantries etc. that should've been used but often just ladders were..........
I admit it shows a lot of thought went into maintaining the aircraft in the field. Personally I don't know of any other aircraft of this type or size (exception being some seaplanes) that had the mountings on the aircraft.