Yes, i aware about it. But in this anime arc, all, & i mean ALL Zanpakutous become a human form. All the owners (shinigami) refers them as usual with their names (like Rukia call her as Sode no Shirayuki). Thus, this is a personafication & a seperate individual from the shinigami. Other opinions are welcomed ^_^
I agree, keep them separate. The Zanpakutous are acting on their own and thus should be referred to as separate entities. Do you tag Rukia's sword as Sode No Shirayuki when she is clearly using it? No you dont. So the same logic applies here.
