I bought the short version of this.
I like it but......although its new, I rarely reach for it.
I like the scarf part but find the coat itself a bit shapeless. Most of my wardrobe is Cos so am well used to the style but the short version of this coat looks too big rather than oversized. The scarf is annoying unless its cold and I have worn it both around my neck (but makeup rubs off on it) and hanging down. I think its easier to wear hanging down which I didn't think would be the case. its a regret purchase for me.
I think the belt on the long version of the coat will definitely help to give it more shape (provide you have a waist). Belted coats look like dressing gowns on me unfortunately.
I like the coat. Its functional, the scarf adds to it. It isn't a standout coat but its nicer than many. I'd prefer if the scarf was detachable.