Okay, so they aren't really killer. Not even sure how they taste. But we here at Boyd Family Testing Facilities care about our readers and try out random experiments so you don't have to.
Experiment #1 Making scones with cake flour...DON"T DO IT!!! Cake flour really is JUST for cakes. It won't make scones but little flat muffins. The dough sticks to your fingers, clothing, the bread board and anything else unfortunate enough to come in contact with it.
So there you have it. Cake flour ONLY for cake!