Don't think Fred Bear did it, but Howard Hill writes that he did.
I don't know. There is the possibility of pulling the arrow off the string, of course, if one overdraws a little.
With all the emphasis nowadays on back tension and pulling through the release, it seems the likelihood for that happening would be greater.
Even though some three under shooters make this work, I would think the propensity to do this would be greater for them because the arrow isn't held onto the string between their fingers.
But, whatever floats your boat.