Meguiar's stated that their quick detailer was too slick to be used as a clay lube as the polymers would not let the clay do its job. I wonder if they state this with ultimate quick wax. One could almost argue that Optimum states their spray wax can be used with clay to minimize marring. Also that the new Meguiar's Hybrid Ceramic Detailer contains SiO2 yet can be used as a clay lube while also leaving protection behind. I would think you would be ok to try it.