Digital BW, The Print

Is anybody using the piezography ICC system with a 1280? 

I have tried MIS UT2 variable tone with QTR and it was reasonably 
satisfactory except the high values are grainier than I would like. I 
am contemplating trying the UT2-FS-neutral inks which i understand 
would be somewhat smoother in the high print values.  I don't think 
there are QTR curves for this ink, though, and I don't have a 
reflection densitometer to do my own linearization.  I had poor luck 
with Paul's curves when i tried them on UT2 variable (poor shadow 
separation).  I didn't want to play with the curves without some form 
of objective measurement, so i tried QTR with more convenient results 
for me.

The promotional material for piezography ICC/1280 suggests that it 
prints highlights with better apparent resolution and less 
apparent 'grain' (dither?) than other methods.  The sample colors on 
screen look reasonably good, with the neutral being slightly warmer 
than I'd like, and the neutral-cool a bit cooler than I'd like, but i 
could probably live with them.  

Any first hand experience to share?

thanks

ted g