I have one of those TOM-style bridges with those saddles on my pseudo-LP, and it works well. I also use a lotta TUSQ "string saver" saddles on a variety of other bridges. I use the TUSQ material a lot to make nuts, and it seems to be a surprisingly hard material, which leads me to believe it's not absorbing vibration like one might expect from a composite material. If you take a handful of them and toss them in your hand, they make a sorta "tinkle" sound, as if they were glass or something. The stuff doesn't seem to wear much, so overall I'd always use that product given a choice.