I talked to a GM ingame and they told me my best bet would be to make my post here. This is something that they can't answer, and only a person with a direct line to the developers can get answers about this question.
Original post : http://eu.battle.net/wow/en/forum/topic/2723278364
So, to simplify the problem : We were promised alternate skins on the advertising website, yet all the skins made for the pets are 100% knockoff's from the original store pets.
In my original post, I link to the advertising website, a post created months ago, that was left completely unanswerd with the same intention as mine, and a post indicating GM's we're getting answers that never arrived.
I realise there probably aren't alot of people that care about this problem, because they never recieved an answer, or simply forgot about it, but I would like to see this problem finally dealt with, because months have passed and it seems to have been overlooked, forgotten or just plain ignored.