Let us know how yours turn out. Mine are holding perfectly. Doubt they will ever come loose. Big advantage of this method is that slight variations in hole cutting don’t matter since the ABS cover is wide enough. I saw this as a real issue with the slot method.
Thought I would share my solution to cover the 4” holes. More effort than Gorilla tape but worth the extra effort.
Material links: ABS plastic sheets and Automotive Trim Tape (16’ needed)
https://www.amazon.com/dp/B0BGC7NMS7?psc=1&ref=ppx_yo2ov_dt_b_product_details...
Thank you for your quick response. Still some open questions about tread plate attachment, weight and tread size compared to the running boards. Hopefully your pictures will reveal more. Especially if you post side by side pics of both products.
There are still a lot of questions about the sliders. When will we see complete pictures of the final design? Removable Treads? Same length as running board? Installation instructions? Final weight? Every post seems to mention more design changes.