I have one cross. And I wear it only on rare occasion when I really want something special. It's a gorgeous silver piece (roughly 2.5" by 2") with engraved scroll work all over it. It has a jade centre stone, and three tiny jades adorn the end of each arm. I love it. I don't wear it as a sign of my faith, my faith needs no flash to announce itself, I wear it because it was given to my mom by her aunt, and is a symbol of familial connection despite the generational, geographical, and sometimes even cultural, distances between matante Sister Marie Claire and I.
You could make me leave the cross at home, I"d raise no fuss, because it wouldn't change the way I present myself, the way I talk to people, or what I believe, so what exactly is the point?