having been watching the cxx00 forums, I saw that Cacko 1.23 which was primarily developed for them was also built for the 7xx and 860, so I took the plunge at the weekend.
no problems found (except that my backup wasn't as comprehensive as I thought, d'oh!)
nothing's astonishingly different, but it does seem a tad quicker (playback of video doesn't seem to require overclocking in kino2, for example, so perhaps the tetsu custom kernel stuff has made a difference).
has anyone else tried and has any comments?