My older Wave tool had a combo blade, and I liked having the partial serrations because the grooves worked better at times for trimming coax. Unfortunately the edge on the serrations tended to roll a lot more often when cutting stainless braid and even when cutting plated copper braid. I also tended to nick the center conductors a bit more often with the serrations because the leverage effort was too great to use the plain edge to cut through the cable properly. I've since reverted to just a plain edge. In fact, my current Wave tool has both a full plain edge blade and a full serrated blade, so compromise is no longer a factor.