I think that NWMTB (my LBS in Cheadle) has got one in stock, they are usually amenable to serious people taking things out for a test ride - why not call them and see? Ben who runs the workshop is mechanic for Nigel Page in Team Intense so may be able to arrange something in any case.
The guy you need to speak to is "The Messiah" He's into big x country routes with serious DH's thrown in . Swears by it - probably sleeps with it. Check out the reviews section.