you would figure people would know whats rough and whats not rough enough to rip your nib...AP reply.. Ha! I know. Not all markers are to be used on all surfaces. but some people need to learn the hard way I guess... thats why we have replacement nibs!
i cant stop about this marker...the best ive ever used. everytime i order i get these. the purple is great. all are good..i dont know about the brown though..im not too much about the brown.all krink products are good..exception of the ink in the big squeeze. the k70 is badass too for outlining in the blackbook.juicy.