Got this on Kickstarter in the gold and it is utter crap. It is difficult to write with, the coating rubs off in the hand and the magnets chip. DO NOT BUY!
jammy97To add to this: I've had mine for over a year; I barely write with it, as the cartridges that came with it and that I got for it are .5mm and it doesn't show up well. I have 3 chipped magnets and the only reason more haven't chipped is that I don't use the pen very much.
It's really fun to play with and a neat toy for your desk at work. That's about it.