Great alternative in case you don’t want to cut a pocket for D-tuna. In my case I have a Schaller FR(recessed mount) and a trem setter, so I can use my tremolo both ways without any issues. Not sure about top-mount/non-recessed FR installations. It might appear tricky to setup fist time, but once setup performed correctly It works great, able to use it for D/drop C tuning without any issues.