I've been loving this thread. Classic mountain and molehill stuff.
All I've got to say is.....
1) I have a leadbetter grip on a 7 iron. 50% of the endless balls I hit are with this club.
2) I could play with that grip ALL the time and never quite square the face.
3) I would hit pushes and fades it I did.
4) So, I don't.
I aim down the left, I aim down the right. I tweak my grip, I closed down the face, I do whatever it takes.