I went with steps for my truck just because I think running boards make the truck look to low to the ground.
I bought Steel Horse steps from Wally World. They mount on the pinch weld and brace against the back side of the body under the door sill. They seem to be fairly sturdy, more so than they look.
There are probably other steps that mount to the frame, but these are sturdy enough for me. I haven't seen any problems in the pinch weld area.
Good luck!