Dealing with flowing string/cloth objects in ZBrush

aaeriam

I'm looking to make a sword model in ZBrush to texture with Quixel and import into Unity to use as a portfolio piece. On the object itself, I want to add a string, cloth, or something flowing, at the end of the handle, that will handle physics properly when thrown in-engine. Is there anything specific I'll need to set up in ZBrush itself for the physics of the piece or is that stuff handled in-engine. Below is a picture that has what type of effect I'm going for.