Looks like Deathstrike is weak enough to be overtaken by bandages as a method of emergency self-healing for DPS. Especially for Unholy where DS eats runes from 2 strikes instead of 1.
Dense Embersilk heals for 35k over 8 seconds, prevents all actions from the player's character but leaves you with a full set of runes at the end. Deathstrike will be healing 8.5-9k per strike for the average DPS, eating Obliterates if you're Frost and forcing you to do Deathstrike+Blood Strike as Unholy.
Atm it looks like bandages are the best option both for healing AND keeping your DPS up at the same time