I think that the OI definately can be a smooth archy type ball with the correct drilling. Mine has a very smooth reaction. I bought mine second hand and just fixed the span. I am not positive about specs on the drill however I seem to remember that the pin is way above midline (5-6"?) and to the right of ring finger with the cg backtoward grip center.
I would tell your driller what it is you are looking for in a reaction and he should be able to set it up.
Or if you decide it is not what you want LMK and we'll deal!
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Whether you think you can, or whether you think you can't... you're probably right.