kneebashing without a weapon via unarmed specialist

[gilchristr]

Characters that have trained to be unarmed specialists are not required to use a weapon with any cheapshot maneuver that would normally require one. These include templeshot, kneebash or throatchop


Is the unarmed kneebash done with a punch or a kick? And if its done with a kick, to spiked flaring leg greaves flare on the kneebash?