Originally Posted by San Rensho
Sew ups handle better at extremes because the sidewalls are much more flexible than clinchers, its easier to change a flat on the road with sew-ups, which you will probably have to do since they tend to flat more.
They are a pain to glue on and trying to repair one is like doing exploratory surgery on a snake.
Could you expand on your statement that tubulars flat more often. I ride both and see the this as a tire specific issue not a design difference issue. In my reading I believe one of the reasons Lance likes Tubulars is they flat less often.