Honestly it has been exactly "cups of coffee" that many of the large block size proponents have been using as their own mantra (this particular use case certainly didn't start with me).

In any case I am referring to small payments that currently you would be far more likely to be using a credit card and for which reversibility is something that one would want without much hassle (you don't want to have to involve a lawyer to get back 10 dollars from a bad merchant).

Again for person to person transactions Bitcoin works extremely well (I have purchased Bitcoins for RMB in the past for people that had visited China a few years back).