
Wonderstell |

Has there been at least a semiofficial answer on how this works?
Probably not, no. But since it uses a sickle I could make some reasonable guesses.
This weapon has a single sickle held in the off-hand attached by 10 feet of fine chain to a weighted metal ball.
Benefit: The sickle is used to make trips, jabs, and blocks while the ball is whipped around at high speeds and then smashed into the opponent.
The sickle deals 1d6 slashing damage and has the trip property. The metal ball deals 1d3 bludgeoning damage and has the grapple and reach properties. Together they have the Monk and Double properties.
Unless you've chosen to wield the metal ball two-handed for the round you'd only get 1x Str on any AoO.
TWF works, but could be hard to pull off since only one weapon has reach.

Melkiador |

Wonderstell could be right, and that’s the way they were mostly used in real life. But swinging the kama is pretty popular in fiction. And the double chained kama also exists in Pathfinder and you can swing its kama from the chain, so it’s odd that the kusarigama can’t do this.
This weapon comprises a pair of kama connected with an 8-foot length of chain. The wielder can attack as if armed with a single kama in each hand or extend the chain to make a single reach attack. By swinging the chain, the wielder can whip the kama about to disarm or trip opponents. Furthermore, if one of the weapons is dropped, the wielder can retrieve it as a free action by pulling on the chain.