I find that I really prefer shooting with an 85mm during weddings. The only time I've really used the 70-200 was during the ceremony, and occasionally the big dances during the reception when I needed the reach.
I just love how stinking light the lens is compared to the 70-200. Much easier on your shoulders by the end of the day. Still, I would never shoot a wedding without having the 70-200 in my bag. You just can't take the chance of needing it and not having it.