The Rupture Tendons combo is absolutely fine, and is not a foolproof strategy (especially against enemies with alternate forms of movement, who usually just sit there in chicken form in my experience).
With chain-CCing so prominent things like Chains of Suicide and Chicken Tendons aren't really as big of an issue as they would be in DoS1; and outside of Tactician's number bloat there's never really a situation that they aren't just AP-efficient overkill.
