Let me first just say that you shouldn't expect anything special from the tip of this pen. If you have used a BIC or any simple pen like it before, you have seen how these types of pens work. The thing that makes me love these pens, though, are the grips that they have from the top to the bottom. Seriously, I really don't think I have ever used a pen more comfortable than this, and I have bought and used a ton of pens in my life.
Considering how cheap these pens are, I can't believe that they aren't in every office building and every school. The grips that they have make it easier to write and they sit between the fingers way more naturally than other BIC pens. I always had the problem of not being bale to write for too long with pens and pencils because my fingers would get uncomfortable, but that's all changed now.
Even if you are happy with the pens that you have right now, I would say pick up a cheap pack of these grip ball pens and see the difference for yourself. It really is something and I know I won't be switching to another pen anytime soon.