I think a lot of it has to do with the riders associated with it.
All the Chug Life guys seemed to be started off with Voleurz, but they kind of seemed to have fallen off the face of the earth lately. Plus being Canadian, there is a smaller fan base, as opposed to if it was mostly in the U.S.
Jiberish is out of Denver which is a hugely dense hub, and has been growing on the urban scene. They picked up big riders early on like Wallisch, Walker, Hornbeck, etc. and kids followed them more and went towards the group they 'repped'.
As for Voleurz, I got a used hoodie off of BST, but nothing ever from their store. Its too expensive to pay for shipping and would take too long.