After 1500 miles my Brooks had yet to fully break in (as compared to old brooks you occasionally see), and I'm a clyde. I had applied proofhide a couple times.
One abysmal night we got to camp late, and when the rain hit I was busy putting up my tent, preparing dinner etc, and forgot entirely about the saddle. The next morning it looked fine, but by the end of the day it had taken a new and wonderfully blissful shape. *Much* easier on the tush now.