rlocus block diagram issue, k gain block before or after the summing junction for rlocus() command?

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desired block diagram rlocus for the above transfer function should be pretty straight forward.

except on the help page of matlab the block diagrams look like this matlab help block diagrams

what am I missing? is it the same?

%% assume plant G properly formulated
rlocus(G);

As far as I can tell, placement of gain block doesn't matter before or after the summing junction when considering the root locus, but I have no idea why that would be.

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