Digital BW, The Print

I received a promotional email about this paper from Breathing Color.  
They claim dmax greater than 2, but don't indicate which ink.  I've 
never heard of a cotton rag paper that can achieve a dmax anywhere near 
2, at least with pigment inks.  Does anyone have actual dmax numbers 
for this paper with pigment inks?  Here is the promotional text:

"Sterling 210 is a Natural White, water-resistant Smooth Photographic 
Matte Paper, made from 100% cotton rag and is acid and lignin free.  It 
is very popular amongst photographers as well as those with quality 
proofing and poster printing needs.  
 
Sterling boasts an exceptionally high DMAX of over 2.0.  Think of 
Enhanced Matte, with a much higher color gamut, DMAX, and 
achievability...for a lower cost.  It is arguably the highest 
quality OBA free photo paper in the industry today."


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