Well flex, it is possible to do one's PhD in a different environment to academia but i do not really see what the problem is. I think it is would be good for you to do it in your home country where you are acustomed to but doing it in another country would open your eyes to new things, cultures etc that you may not have come across. When i do start mine, i won't be in the University at all but in industry and would only visit when the need arises.
I hope this sheds a little light.