I've just installed the B-17 Champion saddle from Brooks on my Bianchi Axis. After the first 30 miles, I'm very surprised at the comfort level.
First, it is indeed hard. And slippery.
I've had to adjust it three times, front and back and then tilt.
I think I have it about right, tilted ever so slightly up at the horn, which helps me stay seated in the proper alignment on the saddle.
I did 15 miles yesterday and 15 today and I think it can stay on for the longer rides I plan later this week.
It actually seems more comfortable than the standard saddle that came with my Axis.
If this indeed improves with use, I'm ordering B-17s for my other bikes.
(BTW... I am a Clydesdale... 5'11" and 235)