Should you rephrase your question? I think maybe you were asking something slightly different than the answers you got.
For me, putting slight pressure (or tension) on the string before actually starting the draw is helpful toward feeling the proper grip on the bow. A little pressure on the string helps me make tiny adjustments to hand placement on the bow. There is a sweet spot on my bow hand where I need the pressure to be. Feeling that spot against the handle helps me apply equal pressure on both limbs with no torque. It's easier for me if I put a few pounds of pressure on the string before I actually begin the draw. I want the limbs in perfect balance in relationship to my nock point. If I put too much pressure with the heel, or web of my hand the bow is not being shot in a "balanced" attitude. Drawing straight back against the fulcrum of the handle is vital to consistent shooting. A little pressure before drawing helps me to feel the fulcrum.
I still shoot with a deep hook and any of the "tension" that I put on the string before or during the draw/hold is all coming from the back muscles. The hand and forearm need to stay as relaxed as possible. Use only enough hand tension to maintain the hook until it's time to release.
That's what works FOR ME.