Class changing, are we unique?

[Atoli]

So, I think he literally did lose ALL of his AST skills!

Wow, now I feel fairly bad about keeping that crystal...xD

Should have a quest where someone steals our soul crystals.

That would be fun, but hard to do, since there are various instances in which we as players can't de-equip the soul crystal because a) the job has no class attached b) the weaon is job only and we have no class/job one with us.
Haha, and it would be such a button mess on the hotbar too..xD