Wow, those Poison Spider rockers are ugly.
There are many companies that make decent rocker guards that have integrated steps/sliders. The first was probably 4xDoctor.
As for nerfs, it seems quality really dropped in the late 90's with nerf bars. I have some old school smittybilt nerfs from the early 90's, could be 80's, and they are solid. For ground clearance though rocker guards are better. If I was going to get some, I'd go with the Kilby.