Does overexposing help get a better RAw file in the OMd?

That sounds like an argument for the sake of one.   As the primary goal afaic is the best s/n in all sections of the tonal range for the sake of the finished exposure.   The finished exposure is always the primary goal, the means to reach it a function of understanding and making best use of the medium.

No?

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...Bob, NYC
http://www.bobtullis.com
/"Well, sometimes the magic works. . . Sometimes, it doesn't."/ - Little Big Man
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