A Stanley: Wynne could certainly take the pitch without a passport - but how do you travel through Asia with the All Whites without one?
Can someone remind me if Wynne retained his SA citizenship upon being granted NZ one. If I recall it has to be requested of SA authorities before the new citizenship is applied for otherwise the SA citizenship lapses (used to be the same with Australian citizenship up till 2001).
If he has not, then he is a NZ citizen only. If he has a SA passport and travelled with it for qualifiers, he is not a NZ citizen (just a permanent resident visa stamped in the SA passport - for the purpose of eligibility to play for one's country defined by passport, not by residency).