The madness proc animation is long enough to swap to the rippled blade, activate drawstring grease and hit them twice to proc sleep. This requires high arcane to proc sleep fast enough (I had 80 ARC while testing this combo). You can do pretty much everything you want after hitting the sleep proc.
The madness proc allows you to hit high poised enemies with the rippled blade twice. This will not break high poise enemies. Against low poise enemies, you'll stagger them hard enough to land a second hit.
![](https://i.ytimg.com/vi/YlvHjZmIjJU/maxresdefault.jpg)