Death in the mountains

yes, i have had a few cuts that could not be sealed by sealant, and needed to be patched from the inside once i got home

once when out with @OneLessCardigan

That's why I've got the Dyna-Plug kit, although I must say I'd rather have to use it (and therefore validate if it works or not) riding through central London rather than in the front range of the Rockies. When I remember I take a spare tube with me when in Colorado.