Shomer Negiah Panties allow a woman to abide by the halacha, but still be individual and sexy at the same timeAllows her to follow the halacha? How?
Maybe they are meant to work like tzitzit:
And they shall be tzitzit for you, and when you look at them you will remember all of the Lord's commandmentsand do them and not follow after your heart and after your eyeswhich lead you astray.
Imagine: The guy won't take no for an answer. He's a real hound, and nothing the girl says is working. So, finally, she whips off her skirt, and bends over to show him the shomer negiah label. At which point... what? The guy says, "Ah! Sorry, didn't know. My bad"?
I just don't see it.