The book is absolutely top notch and has an appendix which adds advice specific to your home country's tax regime to help you avail of all your advantages whilst you are an expat.
Follow his very simple advice and you will return home at least $250,000 richer than your EK colleague who lets his money be incrementally robbed from him in the C fund.
Before you type your nay-sayer's response be aware that Hallam only offers his very astute advice and is trying to sell you nothing but his book.