All on this board know my views on Giteau. However I have to question why he thinks he can return a better player after playing NH rugby. Name one player who has returned from the NH better player, or even as good as when he left. Perhaps Rodney Blake, but we'll have to wait and see how he goes and he was hardly a polsihed player when he left.
As for Gits shining I am positive he could in the right conditions, but consider the fact that Chris Malone has been spoken about glowingly in the French comp in the past. Whilst I though Malone was a very good club level FH there is a reason he never made the step up to S14. In that company Gits will shine, but only in nice dry conditions, when it becomes a hard slog I think he will be in trouble.
I am also glad to see him leave as it will prevent coaches picking him on reputation/requirement and allow the development of some new up and coming talent. As an aside on this point it is a great pity that the Brumbies are foregoing the opportunity to play To'omua at FH and put Giteau in his best spot at 12. I wish Giteau all the best personally and game wise in this new segment of his career and life, but make no mistake I am happy that he will no longer be there to get an undeserved (on form) place in the Wallabies squad.