It is one thing to describe yourself as a "pocket player" and another to think that it is unique in some way to bass players.
Actually "the pocket" is an equal opportunity place of existance within the music itself that is often palpable to the listening audience. It is not just unity but a place where a group of folks become "the faucet through which music flows".
I think it is this concept that we bass players often mix up with "the groove" in some ways. With the so called "groove" the relationship between the drummer and the bassist is pivitol because the groove has always represented (at least to me) the rhythmic pulse of a piece.
The pocket is something else (again IMHO) perhaps even harder to define. The article at the end of this link is one of the best I ever read on the subject so I thought that would be interesting to someone:
http://www.allaboutjazz.com/php/article.php?id=17487
Nontheless I absolutely agree that for most folks being told they are a "pocket player" should be taken as a compliment. As it is not about how much or how little you play, or even the style of music...it is about a state of being.
Spin