Digital BW, The Print

Hello:

After recently viewing the first travel portfolio(Bravo to all!), I noticed 
that one individual used German Etching(AKA Lysonic Fine Art).  The image was 
very continuous-tone looking and I was very impressed.  I'm curious if any 
users experience a flaking off or little spots when there is some abrasion 
across the surface, especially in the blacks.  

I plan to use it with MIS VM hex and Gen4 pigment color inks.

Thanks,

Andy Darlow