Ever seen these things on their awkward little display in the bakery section of your grocery store? (One of the Krogers in town actually puts them in the Hispanic food aisle -- doubtful, guys.)
They taste fine, not great, but I usually use them as a vehicle to shovel other things into my mouth. They're actually incredibly good at flatbread-y pizza.
One of the brands, La Tortilla Factory, makes a wrap that rings in at 10g carbohydrates, of which 7g are fiber, for a net of 3g carbohydrates.
Ingredients are: water, oat fiber, whole wheat flour, soy flour, vital wheat gluten, expeller pressed canola oil, contains < 2% of baking powder, sea salt, guar gum, citric acid, yeast, xanthan gum, l-cysteine.
Well. You'd be hard-pressed to find one of these in a savannah ten thousand years ago; I'll grant that. But maybe one or more counterarguments will persuade you: (1) it's just a 36g little tortilla every couple of days, and/or (2) 80/20.
Having had a good deal of success with South Beach, which doesn't sound the alarm at things like wheat and unfermented soy, I'm interested to hear what Paleo folks have to say.