I've dispensed with the use of TTs when doing bill switch effects (with one exception) because the
smallest amount of sleight of hand and simply better performance skill can cover the need for one.
What Juan Pablo has done is make the sleight of hand element 50% easier.
I think the same
of this that I thought of the Michael Kaminskas' KFC fold, it's a better mouse trap that can make an
old method near obsolete.