One nice thing about the chain though is that it won't absorb sweat.
AND another plus to the cord, if you are in a bind, that para cord can be sacrificed temporarily or permanently to be used in a lot more ways than the beaded chain can. Bow drill for friction fire, lashing/cordage, you can pull the inner strands from the cordage and utilize those as well. 550 is a fantastic survival item. With the adjustable knot design, a portion of the necklace is double stranded, so you end up with a decent length of cord to have handy when it's untied and straightened out.