I'm pretty sure no one shot the Bianchi Cup with that grip on it. There is a lot of right and left hand shooting in the Cup. Grips are easy to change. Probably someone who got it after the Cup shooter changed it to those grips and added the trigger shoe.
This is my Open Class Bianchi Gun.
It's a 686 with a 6" Walther 1-10 twist barrel, .355 diam., a 7 port titanium comp, barricade wings, Stick Shift to put in the lead for the moving target, Holosun green dot scope with solar panel to keep the battery charged, or still run with a dead battery. The grip is for shooting right and left hand and prone. The action is my RevUp Action drop in hammer kit. I have been making and selling Stick Shifts at the Bianchi Cup since 1995. They are the industry standard in mover bases.
The comp makes the recoil a little more than .22 rimfire when shooting 140 power factor loads.
I've been shooting this gun for about 20 years and it's doing fine. Any shots out of the X ring are always me, not the gun.