Okey cokey, going to have to put my mean head on .
If you want to use a Katana then you can, just don't expect it to last or even work ( I'll also scorn you and call "Mall Ninja"
Any weapons you want to use can possibly fail, and your IC background will determin how succesfull you are with them.
But there will be ways to learn how to use any thing, don't forget you'll start off in a city with all it resources so make use of them if you want to survive.
If you royaly cock up your character could well die, or worse become one of the living dead.
Mean head off.
Cocktails in a ZPAW are always a welcome Celestial