Lose an engine in a Cheiftain (or any other light piston twin) at MTOW AT the critical moment and you'd want to have a guardian angel sitting on your shoulder, because you would want to be VERY current with your assymetric procedures AND the aircraft would need to be in very good condition both engine and airframe wise to show a pos rate of climb under any conditions. Blue line and BOOK figures are just that.....figures produced by a test pilot in a new aircraft for certification purposes. Close it down and put it in "controlled", sure as hell, if it goes in uncontrolled you'll end up a grim statistic.