The medium nib gives a very smooth, wet line, and has some variation when you press a bit harder. It didn’t skip until I drew really quickly.
Personally, I don’t think the Nexx is for me. My hands are too big, leaving the shorter body and the fairly small grip uncomfortable for more than a few lines of writing. But for smaller hands (the target audience) I think Lamy have done a great job. The cap is vibrant, the nib is great, and the overall look is fairly “hip”. I would definitely recommend it for any younger writers!