Ah cool... this is the first I'm hearing about the fiberfix spoke. I'll just pack that instead and save a locking, chain whip, monster adjustable wrench, spare spokes, and spare nipples... seems like a no-brainer.
Take a Stein or a hypercracker as which hardly weighs anything. Also take spare spokes as the unexpected can happen when you least expect it. I've had the rear derailleur jam and go into the spokes which locked up the rear wheel and broke spokes on both sides of the wheel. pushing a loaded touring bike is not fun.
Cheers
Geoff