I really like mine. Jumped on it soon after they showed up at the small US retailers. Paid full price too *sadface*
The nib looks like a standard #5, so you can play with it to your heart's content. In fact : I was able to fit a Franklin Christoph nib unit in there (I had an extra SIG nib, which I now should treasure as there will be no more made with the passing of Jim Rouse :( )
Or you can just experiment with swapping the nib only. It's friction fit.
Ink capacity is humongous. The eye dropper is workable but I prefer blunt syringes (so as to not get ink on the threads).
One last thing to mention : this is a writing pen, not a quick note taker. The cap takes 3.5 (!) full turns to remove.
EDIT: Here's a filling trick I learned. First of all : don't fill the barrel all the way : the section will need room to be screwed back in ...
Also : on the first fill when the feed is still completely dry, only screw in the section enough that it won't leak. *then* turn the pen nib down and finish securing the section. This will force out a bit of ink, saturating the feed. Oh and do this over a couple of paper towels.