Originally Posted by SuperNothing
That is a pen for a Wacom tablet. Although it is a lot nicer than the one I have from my 4 year old tablet.
In my case, it's for a Cintiq 21UX.

It's the same pen as the one used for the Intuos 3 line of tablets as well.
As for "analog" pens. I just got the Noodler's Ink in today. Old Manhattan Blackest Black and Luxury Blue.
I really like the Old Manhattan. It doesn't dry to a lighter gray with "dark tips" like a lot of so called black inks I've seen. Luxury Blue looks fluorescent in the bottle, but on paper is a more faded grayish blue. Looks nice, but it's not a dark electric blue like the bottled ink looks. It's supposedly bulletproof too, but I have a lot more confidence in the Manhattan Black.
The Calypso Refillable Roller Ball works quite well. Smooth and little to no skipping when writing or drawing quickly. Only downside is it takes a little while to get the ink started if it's been sitting around for awhile. I find that gently tipping the pen back and forth a few times before uncapping helps.
Also, the Noodler's Ink dries really fast. The dry weather helps with that as well.
Otherwise, we'll see how it holds up to clogging and leaking over time. I won't be taking chances. I'll carry it in a ziplock baggie just in case. (more for leak protection).
-Ed