I con't compare the Cambium to other Brooks saddle but start of this year I swapped the saddle that came with my bike for a Cambium C15 (NOT the 17 version). Previous saddle had some padding and whilst I never "loved" it I was OK doing rides to max. 60 miles (more typically 40+ miles). I measured my sit bones and the 15 was the correct side for me.
Initially on the C15 I suffered with bruised sit bones. Never stopped me going out, never incapacitating but "uncomfortable". I then decided to get some better cycling shorts (better padding) and happened to spend a few weeks without riding and those two things made life better to the point where I don't think about the saddle when cycling (probably back to where I was with the previous saddle). What I suspect was happening is that once I bruised my bum, keeping riding was continually "topping-up" the bruising stopping things from ever getting better.
As a recreational cyclist I tend to avoid rain so can't comment on that aspect. Before getting one I read a few reviews that talked about the saddle badly wearing lycra shorts - I've done 2000+ miles one pair of shorts and no sign of wear. I've done some cycling in warm enough weather that I get home with a "damp" back, but saddle has always been dry (so I've not experienced sweaty bum due to the materials - but we are talking mild UK weather).
I like the saddle; but which saddles people get on with is a very personal thing.
Also, I've only been cycling for 18 months so don't have loads of touring experience to offer comparisons.