For the record I love novels, inc fantasy fiction and descriptive sci-fi without having a minds eye to bring it into.
e.g. Big fan of starship troopers (the book) which is completely set in an invented universe none of which I have visualized. I saw the film and I can't remember its visual interpretation. (I do remember it being lame compared to the book)
Even without a minds eye I sometimes find some directors visual interpretation jarring.
How do you visualizers get on with the colour of magic? Do you have to see everything?
On the plus side I support two concurrent internal monologues or one that goes double speed & I can go full-duplex.