I'm thinking about putting a hipshot bridge on my fretless build so I can later add a piezo graph tech saddle (if I want to go down that road). I really like schaller brass roller bridges but they are heavy and I can't add a piezo to it later. I was thinking about going aluminum as it would save weight. The bass is heavy but I am still worried about going aluminum. I heard that if the bass is heavy already using a light bridge won't effect the tone much. I'm not a full time builder so I'm not sure about buying into this thinking.