They're pretty smooth writers out of the box. I used to hate Jinhao because all the pens I got had dud nibs, but they've improved vastly in QC. The five Jinhao 82s I got all wrote nicely when I inked them.
Replying again after my order arrived. It's heavy in the hand, but feels good for short scribbles. It's a good shape for my small hands and four-finger grip. I'll have to test it for a longer time to be sure, though. Ink capacity with the built-in converter looks very small, so be warned.
I ordered one since I was curious about the Sailor Pro Gear Slim when it was a lot cheaper. I'll see how it feels in the hand since so many pens are uncomfortably heavy (Pilot Metropolitan) or wide (TWSBI Eco).