Htting grip pressure??

[mcflog]

Does or can hitting lend itself to a firm (read VERY firm) grip pressure. Was doing a little experimenting before the snow hit the ground and was hitting some real quality golf shots. Felt like a hit and hold on (invision the stinger) but the ball was going long and straight short irons seemed to have more spin. Felt like I was really able to keep the hands and wrists from breaking down more. I know Mark Evershed who worked with Tomasello advocates a firm grip, but I believe that may be from the relationship he had with Moe Norman and a belief in the non deviating club face or something like that.
Thoughts??