NEW YORK — What’s it all about? Whether Dean Kamen’s new Segway Human Transporter is the answer to urban traffic remains to be seen. But one thing is certain: Should the Segway take off, the chic set will want to scoot in style. Designers are ready to answer the call, suggesting clothes and accessories for every occasion. They range from reworked biker looks to classy classics and flirty fare, including a mini wedding dress from Vera Wang. And since those subway grates can be dangerous for a girl in a skirt, Josie Natori offers stretchy legging, with heavy lace work in strategic places.