The 2 finger overlap feels very much like a 10-2-D grip.
When I was trying to feel comfortable with this grip, I was doing the Sergio thing at Bethpage.....the constant regriping. But after 1 hour of hitting balls the grip felt was very comfortable.
I want my left wrist cocking motion to be inline with a bent right wrist. My left hand has three knuckles showing.
I just find that the double action works better with 2 finger overlap rather than single overlap.
When I use the interlocking or ten finger I tend to default to a strong or weak single action Grip. If I try to use double action with interlocking or baseball grip, it feels like my hands are fighting each other.