So far so good. It doesn't clog at all for me. Obviously the white out will harden on the tip of the marker, hence the PRESS-NO-GO valve system, just press down lightly and it gets the crispy stuff off and it's ready to go. I have been using these to highlight slappies and for rough rusty surfaces. Works great on bumpy stuff. I really want to try this with garvey/marsh mix. Would be cool if AP made a pre-mix garvey/marsh for those of us that can't afford $40 bucks on 4oz garvey. Only reason I am not rating this 5 is because the refill cap is super hard to unscrew compared to pilot pens, probably cause it's plastic.
got a bottle today. a few dabs of this stuff will take a mop made of pilot or magic ink to a new level. it flows and mixes together very well. its definitely made to be an additive so dont fill a marker woth just this. id reccomend buying some before its gone. it shohld last a long time.
Just got a purple in the mail today, probably the best marker ive owned, it SMASHES the competition.......no? not funny? Anyways the one thing i will say is i was suprised by the color, i think the recipe may have changed since AP did the old marker review video or took the description pictures. In those it looked like a darker inky mix like a spiced up garvey, the fill in the marker i got is a much lighter violet, almost the color you might get if you mixed white magic ink with a good amount of gentian violet. I do dig the color though and it stains super hard.
I bought a black one of these awhile back, when i first tried it out i was not a fan. The thing streaked like crazy so it ended up sitting on my desk looking neat. Recently i decided to take the thing out and see i i could get it writing well, i hit some signs and newspaper machines and then abused it a little on some raw wood, now this thing kills, its also perfect size to take everywhere! I think the nib was simply a little to stiff or dense out of the box to flow well so if you get a streaky one just work the nib a little and it might fix it. I was also a little worried about the glass body but ive dropped mine 10+ feet onto to concrete and the dam thing literally bounced and it didnt even chip the glass so i think these might be borosilicate glass (pyrex/pipe glass) Also the black magic ink plays nice with black pilot if you prefer that refill, but the marker will drip on the first couple tags if you really fill it good, mixing magic ink and pilot also seems to be a good way to stay nice and opaque and shiny and still give the buff man a bad day.