Christoph's exporter now exports the camera positions|parameters from the Photosynth JSON file, although they are only exported as a CSV file as no one has requested that they be be in a specific format. If you have a format that you want them to be saved as, you could ask him under the 'Discussions' section of SynthExport's site on CodePlex.
So far none of the exporters have tried to do anything with downloading the photos, themselves, though. It shouldn't be terribly difficult to save the tiles that make up the highest resolution of each image in a synth and piece them back together correctly, but no one has made the effort as the photos usually take up far more hard drive space than the point cloud and metadata files, not to mention that there would have to be something in place to stop people from downloading images from (c) synths.
Hope that helps you out!