I ordered mine back in April expecting a June delivery. They finally sent me the grip in August. It did not fit properly, it would not sit high enough to cover the back edge of the frame.
When I called Pachmayr, they said there were some issues with the forend screws bending or pulling out under heavy recoil. The forend is quite heavy, so that might be part of the problem. They didn't mention any problems with the grips.
It is a great feeling grip, looks nice too, but I never got a chance to shoot with it because it sat so low. Hopefully I'll get a new grip soon.