User blog comment:Xilinoc/Ch. 542 - THE BLADE IS ME/@comment-11062267-20130619212225/@comment-10699642-20130619213219

I would say at the very beginning only the Hollow Ichigo was his "true" Zanpaktou. But due the constant interference of his Quincy powers, they more or less melted into one power which resembles Ichigos current Zanpaktou Zangetsu (2 swords). I guess its like Ichigo stated. For him both Hollow Ichigo and the Old man guy together are Zangetsu (as far as I remember Ukitake and Kyoraku both had 2 spirits as well [yea and I know it was only a filler arc!!!]). And if I had to speculate about his powers I would say his offensive powers will be more Hollow like and his defensive powers will be more Quincy like or at least thats what I hope...that he uses something like Blut for defense while using his Hollow like powers for offence at the same time (unlike other Quincys who have to switch between Aterie and Vene).