I have a 38 Sp/357 revolver - S&W Frame. It currently sports boot grips that I want to change out for a full size grip. I am going to set it up for my wife to use as a HD handgun. Because of arthritis, I am looking to get a grip with cushioning. However, because of latex allergies, I can't use rubber. Any ideas for a cushy grip that has no rubber? Hogue is out as an option.