I put my sticks in my luggage going from LAX to Narita and in my golf bag moving back. No one asked or said anything.
On entering Narita, the customs agent is so classic, "Do you have any guns, cocaine, or heroin?" Hard to keep a straight face and answer without making any jokes.
On another occation leaving Narita when I had an imitation sword in a long, thin cardboard box as a carry-on: They asked questions at 3 different points to verify that it was an imitation. Finally they waived the forms you usually need to fill out and inspection after I told them I was Japanese American; now that makes complete sense, right? The JAL stewardess kept the sword on the plane in her locker.
It would've been better if I could've kept it at my seat just like in Kill Bill!
When I got to LAX the customs agent was pissed off at some other Chinese passengers who just arrived because none of them could understand English and weren't listening to her...so she waived me through to the front of the line and out the door.