Well, I got it installed and it appears to be working OK.
There are one or two things that throw up an error, but I preume it's because it's such and old box that the features aren't supported.
It looks great, and it is certainly fast enough. There's or two things I don't like. I seem to have lost the grid style EPG, which is a pain and the mode switiching for HD is annoying.
Apart from that, it's all good. Plus, it prserved my recordings from the previous HB install, which was nice.
We'll see how we go with it, but it feels a lot more modern now.