And what does an annual calendar get you more than a simple calatrava with date? A Calatrava you have to change at most once every two months. And it takes about as much effort as pushing a chronograph button - a bit of "interaction" with a watch that many seem to enjoy.
I would argue that with an annual calendar you are also buying "magic" rather than practicality, and, in that sense, it is only half the watch a perpetual is.
That said, I agree with the original poster, the 5056 is beautiful.