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In theory
The theory of WS2 is great, but getting it to coat the relevant surfaces by dripping a colloidal mix onto an assembled chain which has already been greased at the factory is another matter. What you really need to do is to coat the clean and dry parts using some method (not sure which, probably at least 4 main options and research needed to pick the one which is optimal in terms of lubricity and durability in the roller chain application) before assembling the chain
It sold out in minutes, but $25 I think.
It's basically a wax-based lubricant with a thinner alcohol carrier, and an additive:
In theory