I have one and use it with my free motion quilting. The needle hole in the slider does not allow for use of the feed dogs so those are always lowered. I stick the blue painters tape around the edges of mine so the corners do not flip up into the stitch area from under the quilt as I'm working. The quilt really does slide better with the teflon coating on the sheet. I tried the vinyl and it was just like the metal on my machine bed as in not very smooth at all. I cannot quilt as evenly without the slider.