Ink Review: Rohrer & Klingner "Sepia" Ink

Here I review an ink by Rohrer & Klingner, by the title of "Sepia" (a unique smokey-Brown ink, with fascinating shading, and slightly-wet flow). Here-in may be found my own thoughts and opinions on the matter, as well as some test results I have for (among other factors) water-resistance on Clairefontaine, Fabriano, Rhodia, Tomoe River, Copier Paper, Mead Notebook Paper, and Moleskine papers; and using both a Nemosine Singularity with a (dry-writing) 0.6mm Stub nib, and a JinHao X450 with a fairly-Broad-fairly-wet nib as pens for these tests/experiments.