Not yet. But they do make it sound like the greatest thing since sliced bread. I have signed up for one of their demo prints. I'll compare it with what I get using the QuadTone RIP on my Epson 2200 and reposrt back.
I've never used dye-based inks, but I know that Lyson is a well-respected outfit, so I am definitely interested. I hope some else will do some definitive comparisons and report here.