I've had this pen for almost a year now. I bought it to carry with me daily in the front pocket of my jeans and it's been great! The pen is very compact and almost disappears in the pocket, but with the cap posted it's very comfortable to write with. I've been using Kaweco's blue ink and the pen has always written smoothly, even if I hadn't used it in almost a month! The threaded cap is also very secure and I've never had any ink leak in my pocket.
I didn't have very much experience with fountain pens, and was unsure if I should get a Fine or an Extra Fine nib. I ended up getting the Fine for myself and the Extra Fine for a similar pen I bought for my fiancé simultaneously with this one.
Having tried both I'd go for the Extra Fine on mine as well, since most paper you're going to come across is very absorbent compared to paper designed for fountain pens, and in everyday use you rarely get to choose the kind of paper you write on.
The pocket I keep it in also has my keys in it, and I remember reading somewhere that with the plastic body that would be a really bad idea. Now if you want to keep it all nice and shiny you're going to find it difficult if you carry it around with you, keys or no keys, but I've only managed to get a few minor scratches, and the gold inlay is still completely intact. It's inexpensive enough that I don't really care, and built rugged enough that I really don't have to.
All in all, if you're looking for a first fountain pen, or a backup pen etc., or want to start carrying a fountain pen for EDC, I really recommend it.