I believe every Ford cut-away chassis will have a step up from cab floor to house floor. In our case it is a small 2", not enough to put your knees into your chest when sitting in a swiveled front seat.
We find the passenger swivel seat "essential" when we have other people coming inside to hang out, usually on weekend get-aways with other family on a rainy day and after dark. For just the two of us, we never swivel the front passenger seat. It's not hard to do if done in the right order. But we promptly draw the privacy curtain which then complicates the process. If you wonder, we can use the privacy curtain with the seat swiveled, though snug and finicky.