I use the rubber feet for the set up which I don't move too much (like clamshell mode with external monitor). However, for the set up I would need to move it around the desk (using Mac with external keyboard/mouse), I don't use the rubber feet as it makes it difficult to move. Unless your desk is leaning or you are living in the earthquake prone areas (or your house is haunted), I don't think iCurve will move around.