Dimebag typically uses a different guitar for different tunings. You can tune a floyd to d on the fly but you have to compensate for the shift in tension. You could use a tremsetter but you will lose almost all flutter by using this device, but you will still have the
pitch shifting range with the whammy bar. I dont know anyone whos been able to block and unblock the trem like your talking. Its just one of the things you have to deal with when using a floyd.
