I have wires and never had a problem with them. Got my first ones in 2000 and redo in 2005. Actually, second time around the wires and the scar are less noticeable.
But then, I have had two cesareans and I have heaps of stretch marks. I used to be self conscious about a mole on my back, but I don't pay it any attention these days other than getting it checked by the Dr every now and then. Before my first OHS I gave away all my low cut tops (I was 22yo). Shortly after that surgery I went out and bought a string bikini
So now I have lots of battle scars and I don't really worry about hiding them. I also have a pacemaker and all the scars from two AVRs worth of drain tubes and pacer wires. When I wear a low-cut top I just wear a necklace to take the focus off my scar.