I tried to paint my pinstriping. I could not get a clean line, and wasn't happy with it. I switched to a 3M pinstriping tape, and it was so much easier.
I know better now how to get clean lines with the tape, and I think if you did a really pro job painting the pinstripes, it would look amazing up close. But for an amateur like me, the vinyl tape is the way to go; I'd highly recommend it. The stripes really make your scheme pop.