No ink smears.

It has a nice flow when writing, no problems with smearing ink on the paper or my hand.

so I don't smear the ink

(I just hover my hand till the smooth ink dries, and make sure the pen I use has a grip...or at least no metallic which is low in friction.

The ink is also nice; it does not run or smudge on paper

Also, the ink is not as strong or dark as I'd like, and while I'm getting used to the ergonomics of these pens, it seems kind of impractical overall.

Now, I can see what it is that I'm not smudging, thanks to Maped's no-smudge ink and crooked construction

While I didn’t care for the grip, the ink is smooth and doesn’t smudge

My major issue with these pens is the ink (or lack of).

Very uneven ink flow

On top of all that, the ink skips like crazy and I have to press hard to even get a decent line.

The pens work perfectly, with smooth flowing ink that doesn't clog

Lefties like pens with a curved barrel in that it makes it easier to see what you have written and to keep you hand out of possibly still wet ink.