Could you comment on other soulbound items that are not equippable? For instance, Romantic Picnic Baskets and things of that sort, will they be able to be placed in void storage?
We're still discussing a lot of those details, so I can't really give you a "yes" or a "no" right now.
That said, the main requirement for an item to eligible for Void Storage is that it's soulbound. While Void Storage was primarily designed for gear that you plan to use for Transmogrification, that doesn't mean we won't allow other soulbound items -- even if they can't be equipped -- to be stored in Void Storage vaults, too. Such exceptions seem probable.
It's unlikely that we'll allow profession items, tradeskill items, pets and mounts, or consumables to be placed in Void Storage, though.
So, in order for us to use gear for an appearance tab we HAVE to spend 1000g to put stuff into the void storage so we can use it?
Nope. You don't need to place an item into Void Storage in order to use it for Transmogrification. The two systems are completely separate.
We're implementing Void Storage and Transmogrification at the same time because we know that, with Transmogrification, players are likely going to want and/or need more storage space, specifically for the long-term. And that’s the niche Void Storage fills. Just because one system (Void Storage) was designed to complement another (Transmogrification), that doesn't mean the two rely on each other functionally. :)
Sorry for the confusion, though! We’re looking to share more of the rules and restrictions surrounding Transmogrification as soon as possible.