The Double-Chained Kama is an exotic two handed melee weapon.
Do you need to take the exotic weapon proficiency with this weapon to use it without the minus 4, or is prof with Kama enough?
Similar question about the Double walking stick Katana, which basically has two wakizashis inside.
I think you have to have the exotic feat to use the Double Chain Kama, but I would argue you can draw the Wakizashis and use them without Exotic Prof in the double walking stick Katana, so long as you are proficient with Wakizashis.
Do you agree?
The description doesn't allow for that, so no.
Strictly speaking it's a different weapon.
You could rule it otherwise at home but most rule attentive players would likely say no.
Yeah, it came up tonight at a Society game. The pictures of the Ninja characters in all the books show them using the double chain Kama, but they don't actually get that as a weapon proficiency.