Tape works very well for me but I am much more interested in function than aesthetics in a carry weapon. The tape, with a hooked magazine extension, provides a large measure of improved control for me when firing it. To each his own but I wouldn't do anything else to this gun.
Do these grips move around at all prior to installing the screws? The pins should be able to keep them positioned with no slop.
I had trouble with the Rohrbaugh aluminum grips because of this. I suspect the pins 'share the load' with the screws during recoil, and if the pin holes are too big then the screws take all the side load. A partial box of WWB caused the loctite'd screws to loosen and the pin holes to become ovaled.
I ask because I'm thinking about the checkered grips, which I suspect would magnify the problem I had with the aluminum ones unless the pin holes are correct.
Do these grips move around at all prior to installing the screws? The pins should be able to keep them positioned with no slop.