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@Velocio
Maybe I should have used the word decrease.
Actually, I figured it out. It does work.
Chain ring is part of chain line stuff, so can't really move inwards (necessary to decrease the Q factor).
Chain ring on the inner mount works as the crank arm can then intersect with the space that would've been taken by having the chainring on the outer mount (look at the mounts, it's like putting it on the inside of a double).
So by using the inner mount, Royce can move the crank arm inwards the width of a chainring + a little.
So yeah... they do get a reduced Q factor by using the inner mount.