They can be placed in a camming fashion like corded hexes. You can cut the wire off and thread them, but you need to make sure the cord you use is strong enough to handle leader falls, which can be difficult to find if the holes on the hexes are small. Maxim tech cord works well, but is expensive, often more than the hex you are threading with it. I like the stiffness of it though.
The wired hexes in the midrange are sorta cool because you can feed them into places one-handed at times, something that can be difficult to do with a corded hex.
In the end, you probably should just go climbing and see if you use them much. If you find them annoying, then perhaps it's time to change.
Everyone will probably rant about how you shouldn't waste your money on hexes in the first place, but they still have their place on long moderate climbs, in my opinion. They also work well at places like tieton, where the cracks are irregular and funky.