To answer your question, I honestly don't know--not because I'm not willing to engage the question or imagine how my basic personality might shake out in a different environment, because I very much am willing to do those things, but because I don't know how my reasons for my actual religious views and tastes would apply to that situation.
The point in my response (and, I assume, in those of Xahar, Crabcake and others) was to say that there is no such thing as a "basic personality" independent from one's life experiences and (possibly, to a limited extent) one's genetics. Thus, for me, the impact of having been raised as a White male in a vaguely Catholic household between Italy and France is as much an integral part of my basic personality as the attitude I'd take toward any cultural context I could have been raised into.
That's not to say thinking about these hypotheticals is never worthwhile. It's just that the change in life experience that BRTD is describing is so drastic that it would be hard for me to identify what part of me would stay the same. At the very least, he should have been more specific in that respect.