UPDATE!
Part of my order arrived today (Richard told me it would come in two separate packages), and I recieved a miscast hussar whose scabbard looks exactly like the lancer officers in question. Since I have a plethora of hussars to compare to, I know how it was intended to look, as well as what the miscast one looks like. I think it's just a matter of the metal not filling the narrow crevice of the scabbard mold.