I read that and it's all a bit confusing. I read somewhere else it just means you can buy 450 gear with JPs regardless of rep.
I managed to buy JP items yesterday from Golden Lotus and I was only neutral or Friendly. I think they must have done a server hotfix.
World of Warcraft
PCG Guild (Steamwheedle Cartel)
Realm First! Zen Master Cook - 25th Sep 2012