check out flickr for all of them - got about 20 pics of the build up so far.
handling is quck, bike is very nimble. what very limited single track i've hit up confirms my thoughts - that it rides light and stiff. pick your lines good and you'll fly - otherwise, that rock you forgot about will remind you when you hit it.
tire pressure would be very key - i have a tendency to run it high. with a full rigid, best bet would be to run it a little lower.
additionally, initial thoughts would be to possibly run something like a moots post to dampen up the hits a little. could go with the big suspension type of posts out there, but that would be too heavy.