I have one of those swivel steps on my Whistler M35A2. I really, really wanted it. Once it got it, I don't use it and if I do, I feel like I am going to fall. I did find it works great to set a water cooler on when in the up position. That is what I use it for now.
When I did the 396 big block to 6.2 diesel swap in my M715. I had the tow bar adaptors in the bumper. Those things make a great step/work platform base. If I had to do it another time. I would make some kind of platform at least a foot deep and as wide as I could.