The nib is excellent and a great value considering the sub-$10 price point. Even though the line width from this nib is a touch smaller than my 0.38mm gel pens, it's exceptionally smooth when used correctly. That, my friends, is impressive. 
You can also swap this nib into both the Pilot Metropolitan and Prera. I like this grip section quite a bit. The grip is contoured to provide the "correct" finger positions. It's very similar to the Lamy grip section, but a little smaller. Like I've mentioned with Safaris and Al-Stars, if you don't use the "correct" grip, this pen might not be good for you. Besides the frustration of a pen manufacturer trying to impose a particular finger position for a pen, it's a great design that looks and feels good for me. The version I have has a nice "BunguBox" logo on the side, but that's not standard. The barrel is normally completely devoid of all branding.