My brother used to live on Zebra Cakes and Mountain Dew, and he was always super thin. Alas, as he approaches thirty, the Zebra Cakes are starting to show. :)
It's be interesting to see the differences between eating processed and unprocessed foods while eating slowly. I just cannot envision a person taking a bite of a Zebra Cake, putting it down and "savoring"
Perhaps the greatest effect this may have is on the choice of actual food to be savored over the crap, high calorie, processed foods of today.
I'm skinny as a rail though (I worry more about sugar intake than weight) so feel free to hate me.