It is the opinion of several luthiers, musicians and myself that tonal improvements exist on both fretted and open string notes. The physics behind it just confirms and explains this phenomena. Whether this is obvious to the person who has 20 guitars and rarely spends enough time playing each one to notice any difference in upgrades is a subject for another thread.
However whitestrat probably wasn't trying to discredit the link I posted. If the objective of the thread starter is to improve sustain dramatically, then changing the nut might be an inefficient way to achieve it. If the guitar doesn't already have decent tone with the existing nut, changing it to bone/tusq/ivory isn't going to be life changing.
However whitestrat probably wasn't trying to discredit the link I posted. If the objective of the thread starter is to improve sustain dramatically, then changing the nut might be an inefficient way to achieve it. If the guitar doesn't already have decent tone with the existing nut, changing it to bone/tusq/ivory isn't going to be life changing.