Well I have its up and running and seems to be OK, although I'm down 2.6Mb on memory since startup, I was on 328 for a while and it didn't leak that much over a couple of days let alone an hour!
The white bars issue I was having with the themes in landscape has been resolved, but everything else seems pretty much normal. My Wireless synchronization for my Gmail seems to be working better now than on 328 and it activated straight away with out having to intervene; so thats something anyway.
It seems as though the browser is the best i've seen its much faster than before.
This only leaked recently, so I'm sure someone is working on turning into a hybrid already. OneOfAKind put up a .328/.402 hybrid based on the 9520 and 9700 files I think, and he was already talking about adding files from the .405 leak