Okay, I tried buying one of these, but it gave me a very odd addition to my gear.
It can either be used as a quarterstaff or two wakizashis. However, when I bought it, I got essentially two quarterstaves in my inventory which kind of screws up my wield options. Giving me three weapons of: Double Walking Stick Katana (sheathed) (1d6/1d6 x3, two-handed, double-weapon, blunt on both ends) and two Wakizashi-ish weapons (1d6 x3 instead of 1d6 18-20 x2). That would probably work better.
Pictured below is a real life example of what it is supposed to be.
