Last September, I got an 8x10 sample pack of the so-called metallic inkjet papers from IT Supplies and printed my reference image on all of them with the downloaded profiles for each paper. The Moab Slickrock Metallic Silver (the blue one in your photos) was clearly an outlier from all the other papers. The paper itself is an almost middle gray toned silver color - it is NOT white. It looked very strange, and I can't imagine how I would ever use this paper.
For whatever it is worth, here is my writeup of my conclusions from when I did the test in September 2015.
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Metallic Paper Test vs Some Standard Papers I Use
Papers Compared:Simply Elegant Metallic Chrome Gloss
Simply Elegant Metallic Pearl (Simply Elegant is, I think, an IT Supply branded paper)
Moab Slickrock Metallic Pearl
Moab Slickrock Metallic Silver
Epson Metallic Prem. Paper Glossy
Epson Metallic Luster
Kodak Professional Inkjet Photo Paper - Metallic
compared with:
Canson Baryta Phtotograpique
Epson Premium Photo Paper Luster
RESULTS (prices shown are for a sheet of 13” x 19”)
MetallicsIT Supplies’ house brand, Simply Elegant Metallic Chrome had the best pearlescent look. I liked it best $2.60
Moab Metallic Pearl was just about identical, but @ $3.36
Kodak Profess. Inkjet Ph Pa Metallic was almost their equal on a thinner paper base, with very slightly less of the “pearlescent” metallic look. Maybe closer to a normal glossy print. But only $1.85
The Epsons metallics had bad profiles – they were too dark and the Ep Metallic LUSTER had a terrible profile that printed with a pinkish hue. $2.00
Compared to Other Papers for ControlEpson Premium Luster – Excellent color equal to the best above, but a duller reflective surface. No hint of the depth of pearlescent finish. $1.82 (Arista II Luster, from Freestyle Photo in Los Angeles, untested here, but in the past, visually identical to Eps Prem Luster is only $1.13)
Canson Baryta Photographique – less glossy than the metallic, but very good color. Very slightly more green and tiny bit lighter-(probably a profile issue). $2.90
SummaryThe Simply Elegant Metallic Chrome is really beautiful as a metallic and is cheaper than Canson Baryta Photographique.
If I want to print on Glossy, I should probably use Simply Elegant Metallic Chrome.