The Ducal Cape bears a resemblance to that of a formal tie. It can be manipulated to change it's shape however, allowing it to resemble a stubby sword-like blade (as seen in the preview picture).
When adjusted to a horizontal position, the Ducal Cape resembles an axe.
Ducal Cape should be equipped on social adventures. However, it's best to only have one socializing tool on one captain; they aren't too much better than normal socializing. But if, for example, your creature only as a Level 1 Sing, then the Ducal Cape (or Harpolizer) is at it's best.