Blackrock + Coins = ???

So i've been looking to purchase a tabard on blackrock. I have my eyes on wrathful gladiator tabard

But I got some questions regarding it.

Within the game it's an arena mount that requires very high arena rating to achive. - My question in short is. If I buy the tabard or any other item that requires arena rating from the coin store will I get it sent to me? And can I equip it?

It's my understanding that you need the arena rating to purchase the item in game, but as far as equipping the item does not require any arena rating.

Here is a link to the item. http://wotlk.openwow.com/item=51534

I know on another server i was able to earn the tabard and even after losing my arena rating I was able to equip the item at any time