Pretty tempted to this myself.
JAA PPL + Night
Complete my ATPL GS
Go to Skymates or some other school and carry out the training for;
FAA IR ($5,500) / CPL & MEP ($5,995)
Then come back to the UK and convert it all to JAA.
I'm just hoping that having both FAA and JAA licences and ratings might open a few more doors with regards to the BizJet industry. And if it saves me some cash then all the better.