I can understand that. Some writing style I would assume with perhaps of the same ways of thinking. I haven't read his Spiderman so I can't comment on it but Butcher has been doing some short stories in anthologies by P. N. Elrod and the Butcher story in the last one I read was First Person from the POV of a different Character.
At first I thought it might be Harry faking it but finally the POV character says " I am not Harry".
And since most UF is First, I think there have been a couple of times where I have picked up one book and it took me a few lines to realize it wasn't the character I thought it was. For a few lines it sounded like the one I was thinking of but that person is from a completely other book.