QTR-Quadtone RIP

I'm a little (maybe a lot) late to this discussion.  You can see the L* curves for the 3800 here:  http://www.outbackphoto.com/printinginsights/pi045/essay.html#20070123 but you need to scroll down to about the middle of the page.  I'm on a Win7 machine and just went through making profiles using ArgyllCMS to generate and read the patches (i1 Pro to read them).  It all worked fine and I could see the difference in the patch set by reading the unprofiled patch set and the profiled patch set.  You can see the shift in Excel quite easily.  I found the shift to be in the middle of the contrast range and that shadow values were relatively unaffected.