I just tried my new and narrower tires, 622x25(that's one inch for the metrically challenged), and I'm amazed at the lack of friction. The bike seems to float on top of the road.
And I started thinking, since I'm quite a light packer, and if I stay on good roads, I'd like to try touring with them. I could then change for something heavy when I reach more challenging areas.
Has anyone tried long distance road/racing tire touring?