G'day Ohio
Most of the brands you are familiar with are available in Oz, although not all models. Ordering from overseas and geting it through customs is a nightmare and more or less futile. Carrying a knife in Oz varies from state to state. Generally unless you are hunting, camping, fishing or can proove you need a blade for work, anything that won't make it onto an airplane is illegal to carry. Away from the city things are more relaxed.
Daggers (including any knife that has a secondary edge that is sharpened and longer than 75mm ie. bowies or fighters with a sharpened clip ), switch blades, balisongs, push knives, buckle knives, gravity knives, balistic knives, sword canes, throwing knives, various martial art knives including stars, knuckle knives, and a few more I can't think of right now are completely illegal in most states (definitely Sydney).
In Melbourne were I live, we are a little more dignafied and you can odbtain permits from the police that allow you to own the above items as a collector but not to carry. A condition is they be securely locked away.
If you want to contact custom makers in Sydney you can find members listed at the Australian Knifemakers Guild site,
www.akg.org.au .
It sounds a lot worse than it is but I thought you should be prepared.
I'm sure you will have a great life in Oz, hope you like beer.
Regards Peter. Victorian State Rep, Australian Knifemakers Guild.