I've seen short advice pieces on choosing a pipe relative to your appearance, shape of face, stature, weight. They all sound like bunk to me. If you "wear" a pipe, clench it continually going about your business, you might find some look better than others. I think you have to make an evaluation in the mirror, and be pretty honest with yourself. Smoking seated, I think people can get away with an even wider range of pipes without it making much difference. Since pipe smoking is so restricted in public, it seems to make little difference. No one is going to see me smoking my pipe anyway. So if I want to puff a big oversize pipe, or a tiny one, the comedic effect won't have an audience anyway. Obviously, if you smoke a medium size traditional looking pipe, you're probably okay. If you have a Mummert multi-colored block pipe, of course you would draw attention, and would intend to do so. In short, don't worry about it. In the scheme of things, it hardly matters ... doesn't matter.