When ordering my 19 "cabinet and my Patchpanel, I had failed to order this great tool. Since then I wired my wall outlets and half my patch using a small screwdriver and a cutting pliers. As far it had been a breeze for decision (although I would have won a lot of time if I had this tool right away) for both the patch it was more complicated.
Nothing to say this is the tool to have. Only flat, it may take them two times to cut the cable.