It sounds totally weird in South
Africa. I taught a very quiet, conventional
Anouk once, and this seemed incongruous - Anouks should fizz with originality!
Also, I can't think of another -ouk fn. Chinook and, as you say,
Nanook aren't really part of the naming heritage we're most familiar with, and so many actress (and actor) names are made up that people assume the worst. Right now, the assumption might well be that it's a shortened form of
Anneka, which it probably was originally.