One thing that I have noticed about Brooks saddles is that those folks who experiment more with the adjustment (height and front to back) don't need to do any "break-in".
I somehow got it in my head about 30 years ago that a smaller frame is more nimble, so I ride slightly undersized frames. So I want maximum setback and a longer seatpost. With the Brooks it seems that it needs to be even a bit higher than normal in order to be comfy. Otherwise it will seem hard on the sitbones and feel as though it needs softening up. Raise it an inch and suddenly it feels broken-in. YMMV
