Soft jaws allow for forming of jaws and subsequent clamping of molded parts which must not have clamping marks on the workpiece surface. Steel jaws are case hardenable for the jaws to be hardened for longevity after machining.
5-Axis jaws provide the component with a lot more height creating more clearance for tools in 5 axis applications. Serrated surface means that component can be held on less material resulting in less waste material.