I dunno my b/f's brooks is like a torture device to me but he likes it... it's like fire down there, just hits my sitbones wrong and bruises me. Maybe this would go away with extended riding but I am a wimp and don't like to be in pain period.
He can ride for hours with no problem at all, unpadded. Maybe some people are just not designed for tight leather
One other thing, I agree to take the "pro bike fit" or any other fit with a grain of salt. You cannot replicate riding in a shop. I remember having this professional bike fitting book and I took it seriously, using plumblines and rulers to work out the perfect fit... I ended up with even worse back pain, lol. It might be a good starting point for a beginner to get your saddle height correct and such but the only cure for pain riding is to ride and get used to it and tweak it over time, imo.