I have one of these, which I originally purchased for use with a Mamiya 7 (lens off). I use it sometimes for a D90 with lens attached (35mm, 18-200mm), and place the camera 'along' the width of the bag. As the D700 is a taller camera, there might be a slight bump. Similarly, the depth of the bag is such that I'd imagine there would be a slight bump with the D700, and, say, a prime fitted. That said, it has a padded insert.
Hope I'm not out of line here, but I was thinking to sell the Hadley to get a bigger bag. The one I have is sand colour. If interested, let me know and I can send you a few pix, and post if for sale.