A bit over a month ago now (I think) I placed an order with Kevin from Just Write Pens (www.justwrite.com.au), and with my order received a sample vial of his latest 'Blackstone' branded ink. I've held off on publishing a review until now, because it didn't appear to be have been released yet - but I understand it's now available through Anderson Pens (and others?) in the US. Due to supply issues (of nalgene bottles) the ink is not yet available in Australia, but I'm hoping that will be rectified soon - I'm keen to order a bottle!
Like Barrister Black, Barrister Blue is a 'permanent' ink - though as you'll see (when I get around to appending some pictures) it's not completely "bulletproof". A small amount of blue ink washes away in water, leaving a solid line of blue-grey ink.
Unlike the 'Colours of Australia' inks (which are non-waterfast), Barrister Blue is a 'serious' ink rather than a vibrant colour. It's a dark blue, almost a blue-black, that tends to darken further as it dries. I've been really impressed with it, though: it doesn't seem to dry out at all in my pens (I've tried it in 3); it's well-lubricated and flows very nicely onto the page; and it's not prone to feather, bleed or spread. Highly recommend this for anyone who wants a permanent / *almost* completely colourfast blue ink.
Without further ado, here's a photograph my ink review sheet:
Here are two close-ups of the water test grid, both during the test...
One last picture - here's a close-up of the cotton tip colour swatch: