It works like a charm, response to hardware controls is now really fast again, it solved the graphical quirks on windows (the ones where the label for distortion and frequency shifter would disappear) and VC loads faster.
It took a while to install it (I think it needed almost 15 minutes? I can't remember well, installed it right after it came out, but I felt it took really long compared to ohter updates) but it was worth it.
Now I think it only lacks better Win 7 graphical APIs integration but I'm sure it will turn out well.
A little "bug": when switching patches using the VALUE +- button on the hardware, the screen sometimes switches between the new and the old (doing "new -> old -> new" once) really really fast.