I see.

When I ride 30+ miles without shorts, my sit bones can get irritated. Even with shorts, my sit bones can feel it. I guess that's a function of the chamois on my shorts, which is there to help you wick moisture and prevent chafing. I used to think it was there for padding, but now I kind of understand. I bought a couple of chamois pads for the saddle, but I guess they're useless, knowing that they don't absorb moisture nearly as well, and will probably make longer rides more uncomfortable.