I like the diameter of Brian's pen, I have one, it fits my hand great, so I used it. Also, I wanted the grip grooves at the tip, only two ways to cut them, square or round. I didn't like ball end cut. There is only so many ways to make a pocket clip. It's a simple clip, I like it. My pen tips are longer, more pointy, different. Fullers are different. I like a short pen length, so mine are shorter. I like the option to change ink - by screw in tip method - which is the same. Overall, I designed it to meet my needs. It is simply what I would have preferred to use when I was on the force, in the field. This is the Burke M.A.P. pen.
I welcome all questions and opinions.
Thank you.