That's actually a good question Menolly, I imagine you'd need to pose that to the area or even NZ GW manager or someone around that level of the food chain, I'm not sure if the local stores would get much interaction with that side of things, could always try e-mail one of the store managers to see what they say? I was kinda surprised to hear this battlecry has GW sponsorship.
I'm still with Lazarus myself, If I can buy a battle force from Maelstrom games at $95 to my door vs $195, I just cannot justify the latter without some
serious incentive. I'm still happy to support NZ based events with my entrance fee's

I actually popped into GW St.Lukes and overheard the manager talking to someone about battlecry, so it's really nice to have the sponsorship, I still grab the things I need urgently from the shop directly.