The American Honda Fits have this valve fitted so I assume the Jazz does as well.
This would explain why the clutch does not have any "feel".
I thought it was just me getting used to driving a manual.
I'm not so sure that EUDM Jazz have this valve fitted, there are several differences between USDM Fits and EUDM Jazz: for instance, Jazz do not fit the rear bumper aluminum bar.
I'd like to see some schemes and drawings for the EU GK , but they still are not online...