Looking at the difference between the vehicles with door steps and the ones without, the doors are different and the ones without the steps would have needed this done ex factory. I have now seen three KXS 2009 and 2010 without the step and many more with the step. The ones without the step are so much better to get in and out of. It would be good to know how this came about. Was it as you say ordered specially, is it a model variation or even a rebadged Highlander??
Thanks for your thoughts