That's very interesting, OVC002.
Unfortunately it's perhaps less relevant to many than might at first appear, because the time (and consequently the cost, unless one is on the dole) of doing 15hrs is absolutely insignificant to the time it takes to study and pass the JAA ground school. I would estimate 1-2 years of study, for somebody with a business, family, life, etc. One could knock off 15hrs of flying in 3 days.