Possible Clues:

• People with nonmainstream tastes
• PE shirts, jogging bottoms
• She trips (anag.)
• Pabst drinkers, often
• Hepcats
• Coffeehouse patrons, once
• They're cool, man
• Cool sorts
• Wearers of skinny jeans and thick-rimmed glasses, perhaps
• Joint I hesitate to say in street’s for trendies