Com consults with on occasion, has made it easy for us all. Due to the nature of human beings, grips are never installed in a perfectly uniform manner. Some stretch out and grab more than others. Some slide back a bit and bunch up. With warm grips, those preheated or those exposed to high, summer heat, the variations can be very noticeable.
Thin grips play differently than do thicker grips.
They encourage more hand action through the ball. This is not always a good thing. Lack of uniformity throughout the set is always bad unless it is incorporated for a sound, logical reason. Keep a reference measuring device close at hand during the gripping procedure. Many clubmakers simply use a matching, unmounted grip.