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well those Sim Works are kind of the same, Sim Works them selves say about their tyres:
"A lot of people might wonder if this tire can be compatible with tubeless or not?
To tell you the truth, our answer will be “WE HOPE SO”. The reason is that there are 2 regulations in this tubeless tire world such as β vs VHS kind a stuff. We really don’t know how exactly will fit perfectly or slightly fit into these things."
just remove the core of the valve and it will go straight in.
@chiroshi 32mm gravel kings (or 28mm) can be setup tubeless pretty easy.