I've just completed outlining my experience with a set of Continental Road Attack 2 over here.
On to the Battlax...
A friend of mine helped me spoon these on. The RA2s came off quite easily.
The front tire went on without much fight. The rear tire is a different story. These tires (especially the rear) are STIFF. I'm assuming this is because I bought the GT spec. Bridgestone recommends this for heavier sport touring bikes like the R1200RT, FJR1300, etc.
The most obvious thing about these new tires is that they are stiff enough that they've noticeably stiffened the ride.
I cannot comment on much more quite yet. I've not ridden on them enough to form an opinion. I'll post again after some seat time.