Let me start by saying that even though this ink certainly won't suit everyone's taste, I think it's atleast worthy of you giving it a go. A little pricey, yes, but the ink is full of character. I am/was on a quest for a black black, and the Sailor doesn't disappoint.
I actually thought it was a pretty quick-drying ink until I did the smudge test. I think it's just the fact that I used this in my med. nib Safari, which always lays down a ridiculously wet line. I've used it in drier, finer pens and it dries a LOT faster.
I go back on my previous statement that it dries much faster with finer nibs. I used this ink for everything the past couple days in a Noodler's Flex Nib fine point and it took a while to dry with that, too. Don't get me wrong, it's a really, really nice ink, it just takes a while to dry. I love it's character and other attributes, but I don't see it becoming an everyday ink for me, anymore...
All that said, though, it's still worth a try! It may end up on the BST soon enough, though.
I've used this ink regularly for a coup[le years now, particularly so in an ultra extra fine Platinum President. Easily one of my favorite inks. Not quite bulletproof but quite waterproof. And I have never had it clog up a nib, even an extremely fine one. On a very fine nib, drying is not a problem, critical for me as a lefty. I use it for signing checks, detailed notes in (my) books and notes that are archival in nature.
I haven't done a comparison, but have seen comments stating the Hero carbon black is very similar at half the price. Both these inks have nano carbon black in them.
I've been using it for a couple of months in a variety of pens. It's beautiful and works great. No problems with it on the page, no problems with pen function.