I promised to let you know how things are going with the ESS Registrars Ink as soon as I got my bottle! Of course, I would not even attempt to reach the thoroughness of Sandy1's review, but I think you would like some feedback!
Well, the bottle came today, after only 4 days! After decanting it into a medical brown-glass bottle (thanks for the proposition, Sandy1!) I proceeded to fill my HS 1.3 Stub with the ink and started to scribble!
First impressions? Excellent! The ink was free-flowing from the HS and to my amazement the ink flow was just perfect - wet but not too wet. See, the problem I have with other inks and my HS Stub is that the nib is too wet with inks like MB Violet and PR Tanzanite and as a consequence I had severe bleed-through that really got me steaming... This is not the case with ESSRI, the flow is just right and there is no bleed/show-through.
What is wonderful with ESSRI is that in papers like Leuchtturm (and, to a lesser degree, Toyale Creme) it changes from blue to dark blue-almost-black in a matter of seconds! What a great ink, especially for the Stub nib; even if dark, it retains the wonderful shading... I am not a big fan of blue inks, but the ESSRI won my heart!
I think this ink will be with me for a very long dalliance! Posting some pictures, so you can see for yourselves.
✃ snip ✁
Many thanks for the follow-up, and adding more informative samples.
It seems as if there are at least two inks residing in that wee bottle! One that appears to be dominated by the Blue dye, the other by the iron-gall!!
Even though I mentioned that choice of paper would ". . . set the basic Look, including exact ink hue (!)", such extreme results were not seen previously.
Also, the ESSRI has none of the feathering / woolly line of the ink used for labeling the samples.
I am curious about the change of colour/density, especially the sample on "very crappy paper": Does the appearance change to a more dense Blue-Black as time passes?
I believe you have clearly demonstrated the need for sampling of the paper and pens prior to committing to their use when a specific Look is desired.