^^^^^ if it's live it's on SKY. Period. SKY subsidiary Prime which is FTA unless you live way out in the sticks carries delayed coverage of selected matches but the coverage doesn't start until the match is well over: last year for example, Bled 1 was on SKY at around 10 NZ time but not on Prime until after midnight.
Surprise surprise Prime is the FTA partner for RWC 2015 but if RWC 2011 is anything to go by even AB matches will be seriously delayed.
SKY also has specialist shows for ITM Cup, Heartland, Club (Grassroots Rugby, my personal fav) & 1st XV schoolboys (main centres only unless, say, Auckland Grammar happen to be playing Hamilton, New Plymouth or Palmerston North Boys). Shows analogous to Rugby HQ (Re:Union is the main but not the only one) are also still SKY-only, I believe.
In short, being a hardcore rugby fan in NZ is much the same as being a hardcore rugby fan here in Oz: if you ain't got pay TV, you ain't gonna see anything live & bugger all at any time.