I have the Owl Slider steps on my Grenadier, I also work for Owl so I will try to not be biased.
They are a fully functional step and rock slider at the same time.
My wife is 5'0" tall and my daughter is about the same height.
I have the Eibach lift springs and 34" tires, so it is tall and difficult to get into the vehicle with out a step.
They fully function as designed as a steel slider and they can take the full weight of the Grenadier in a offroad situation.
The Adrenaline Grenadier on our trip had the Owl tube sliders without the step and they also performed as intended.
The Agile and Black Sheep sliders also performed very well under the conditions as well.
I maintain that I would not take a Grenadier "offroading" without some sort of functional slider.
There are lots of choices in the aftermarket for steps and sliders at the moment, so I think that you can make a choice based on how much step you want or need, and how you want them to look.