Hope the Brooks experts can help. I'm thinking about one for a new touring bike but understand you're not supposed to ride them wet. So what happens if it rains on tour? Plastic bag?

I'm small and think the sit bone measurement is 120-130mm - bit hard to be sure. But I use a pretty firm saddle on the roadie and I prefer a narrow nose. Would I be on the right track with a B17s or Finesse? No trial system here, so I'd like to be pretty sure.