I've read some books that link personality to the pipe style, but I can't say I have any one style.
If anything the variety of my pipes is what defines me. I like the security of consistency and systems, but I hate monotony so I will change things up just to experience something new. I prefer billiard a or apples, but I have some free hands and dublins and bulldogs. I like smooth, but sometimes I like rusticated and I love the style of the partially rusticated Nordings. I now work 2 of my more recent homemade pipes into my 7 day rotation, one rusticated apple, and one 'real' acorn. I like bent pipes, but I find bending and fighting with the pipe cleaner to get it to the bowl while smoking to pick up the moisture is such a pain. I love peterson, Savinelli, Nording, And my own...
So if anything, my pipes reflect my eclectic tastes, mood, and interests.
Defining a style of a pipe for me is like discussing how one brush stroke on a painting defines the painting. :D