Hi Andy,
it looks that only a couple of guys had the chance to test them, and the comments are very good.
They say that the feeling is like having a two gear engine, and even they if are made of metal only it looks they don't destroy the bells.
By the way the requirements is to use only BZM bells, since they are made of a steel that is claimed to be the only compatible.
Next weekend will be THE weekend for testing since at least two retailers have set up a public test session with these clutches.
One will be held at San Mauro a Mare track and the host is our friend Lollo from LRC (link is on top of this page).
The post is this one, prices also are shown:
ANTEPRIMA ITALIANA BZM da LRC!!! NUOVA FRIZIONE DELTA
here is the link to a generic post on this new clutches:
nuova frizione da bzm
Ciao