Just curious... Do you guys use Slime in your tubes?
I've noticed that while, yeah, it does add some weight, I feel totally naked without it. I've never had a flat while running tires with it in (or have gone flat only to pump it up again, go a mile, and have it sealed)

I just can't imagine not using that or kevlar belting or SOMETHING on routes that shady/dangerous/whatever.

a few grams of protection are worth lots of oz of mace, I think