When say grip configuration I am referring to whatever grip puts the face in the position to hit the shot desired. The main point being, if the face is overly closed or overly open it and one tumbles the shaft correctly they will get unacceptable reults. For example the very reason out hand path players always reverse tumble and back the shaft up is so they don't shank or pull hook. Because they back the shaft up which "tends" to open the face is the reason for overly strong grips.Vice versa for the overly inside hand path player with a massive weak grip. So, IMO the grip is vital because you are creating a viscious circle by band aiding bad hand paths and backed up shafts with compensating grips.
Preferences are preferences and I am certainly in no position to promote an exact grip for anyone. For me the right grip allows the shaft to be tumbles correctly with satisfactory ball flight. Again, the shaft must tumble to get good path and angle of attack, so the face/grip must not prevent it.
A strong counterfall/transition is again subjective, but the point being it facilitates a good hand path. If staying closed get the hand path on the right angle of attack then I say be more closed. On the other hand, if you're a plyer who gets great depth to your hands at the top you may need a less closed or be "allowed" to feel more opening in the counterfall/transition. What ever it takes to keep the hand an the right path to allow tumble.
