CAn definietly understand where you are coming from Oakleaf. Years ago, I was riding on sewups and did have a spare with me. Although what I didn't take into account was that it was fall and very cool out. What that means is that I didn't weigh enough to really push on the bike/wheels and get the glue so that it was soft, so I could change my flat. Friction generally allows the glue to become quite soft, but on that cold morning, well that didn't happen... and here was the mechanic walking back to the shop. That was the last time that I ever rode sew ups, perhaps now the glue is a bit better... but I'd rather know that I can get myself home... because now I do live in very rural area.