I did. My Dad put an optic on his P30 last year while he was visiting, and he really liked his existing holster. I just laid the gun over the holster, drew the "edges" of the optic on with a pencil, and went at it with my Dremel and cut off wheel. Obviously, go slow, and take off less then needed. I ended up doing three passes to get the clearance just right. Using a straight edge and pencil helped me get nice lines. When I was done, I knocked of the frayed parts with a medium polishing bit, and then hit the raw edge real quick with my butane torch. that gave it that glossy, rounded edge the rest of the holster had. Took maybe 15 min, start to finish, and looked factory when I was done and works fine. The only thing is, obviously, there's no sweat shield on the optic, if you like that kind of thing.