i have just swapped an ORC twin for a Nismo Super Coppermix twin.
The Nismo has a std slave cylinder, and is as light as the standard clutch.
It doesn't rattle when engaged or disengaged, and barely shudders on pick up.
Progressive, feels great, and virtually un-stallable.
The perfect street ~600ps clutch - can be used every day, all day.
SWEET and much easier than the ORC!