duster vs gruff

But it faded rather rapidly when the whatsit that had been playing possum behind me slammed into the small of my back like a sulfur-and-rotten-egg-driven locomotive.
The horns hit hard and it hurt like hell, but the defensive magic on my long black leather duster kept them from impaling me. The impact knocked the wind out of me, snapped my head back sharply, and flung me to the snow. Everything got confusing for a second, and then I realized that it was standing over me, ripping at the back of my neck with its claws. I hunched my shoulders and rolled, only to be kicked in the nose by a cloven hoof, and an utterly gratuitous amount of pain came with a side order of whirling stars.
I kept trying to get away, but my motions were sluggish, and the whatsit was faster than me.


Small Favor Chapter 1, Page 7