By RUTH LA FERLA Published: January 11, 2007 HADASS KANTOROWICZ is on the fence. “I eat less meat than I used to,” said Ms. Kantorowicz, a self-described tantric healer who stopped in last week at Organic Avenue, a vegan general store in downtown Manhattan. “I’m definitely a lot more conscious than I used to be.” While she appreciates the virtues of a meat-free diet, she stops short of embracing a vegan way of life, one that would ask her to forsake a croc-embossed bag or patent leather pumps. “And I’m not