I don't know if it's been mentioned here yet, but it's important to point out the B17 has no aft adjustablity; there is no space on its rails ahead of the midpoint. So if your normal set up requires the clamp to intersect a line ahead of the center of the saddle (ie., you need setback), you will need a seat post with extra setback like the Velo Orange. I learned this the hard/expensive way on my Surly disc trucker.
But it was worth it. I started with the saddle I used on my road bike that I thought would be good enough for touring, but found after four hours it became a torture device. The Brooks B17, OTOH, as made saddle comfort a non-issue for over 4k miles now, with many long, 8-12 hour days on tour.
Last edited by Brett A; 09-05-22 at 10:31 AM.