Or you could do what I did and just add a magnet.For me the only advantage the S1 has is the magnet in the tail and available in different metals. The ZL overall is by far superior, just wish they would offer a titanium light.
I've recently retired my SC32w as my EDC and carry the SC62w since most of my other lights are 18650 based, (now I'll have a spare 18650 in my pocket that will work for most of my lights).