I don't define myself as a "hipster", honestly don't know what they would be. I've enjoyed a pipe for over ten years now, I maybe in my early 30s. I have yet to wear "skinny jeans", or anything that is in style. I usually wear plain jeans, or shorts, and a T-shirt, with boots or skate shoes (been wearing those since I skated in school).
Anyways I have nothing against hipsters, what ever floats your boat. That being said if your smoking a pipe cause you think it looks cool, or want to get noticed. Please just stop, do it because you enjoy it, I think that would be the best reason.