OK, OK................
Its been stated on tests with a machine, that unless you have a swing speed of near 120 or so the COR of a driver does not increase your distance. The average player does not swing fast enough with a driver with a cor of 90 to compress the face enough to get any added distance.
Yes, I will occassionally play a non-conforming driver when I'm out for fun. All my playing buddies love it as they out drive me! Actually I have 2 of them. One has a cor of 86 and the other is a cor of 90-92. NO - I did not gain any distance at all. Though the Integra 175 only weighs in at 240 grams. And no - I gain no more distance over my Callaway Edge. Its just a fun club to swing!
The Integra 175 is made as a 90-92 cor with a special heat treated titanium face and will not dent. It is NOT a shaved driver. The shaved drivers can dent if you have a swing speed of greater then 100 and have a driver shaved to 90 cor.
So, get over it.....I'll never play with you guys anyway : ) I'm out there for pure fun, I don't care what the USGA says about cor, any more then what I care about the UCI says about seat setback on a TT bike.
When I played in 1 tournament, the only one I ever entered, I used a Callaway Edge : )