swingers should tend toward lighter grip pressure because they must 'allow' CF to take over, and tension leads to blocks
hitters should tend toward firmer grip pressure because they are 'fighting physics' in favor of geometry (fighting the design of the club tending to open/rotate by keeping it more 'square' throughout the motion
firmer doesn't mean 'tight' in the sense that you would be too tense to move quickly
On a 1-10 scale with 1 being light - swingers 3-6 hitters 4-8