Great looking Pen, I have built a few of these and almost all of them have worked loose to where the grip section will start to spin.
Max, that was a problem in the design of the first version... The new version they fixed that problem by making the whole grip one piece and the nose cone screws on like usual. It has lower quality plating, but at least the grip doesn't spin.
In my opinion, these are the best click to buy for someone who writes a lot. In school I have to write a LOT, essays here, other things there. My hand would always cramp up no matter what pen I used. When I switched to a Guardian, my hand stopped cramping! I wrote 6 pages (12 front and back) for a test I had in a one hour period and my hand was fine afterwards. As far as durability, I am not sure about everyone else's experiences, but I have been using mine for a year and a half with no problems. It has gone down stairs, flown across parking lots and gone through the wash
. So, that is my take on the Guardian. I really like these pens and would recommend them to anyone.