Sar'resh was also a master of Shadow Hand, in addition to the other eight fighting styles of the Sublime Way, so I'd say he probably wouldn't look down on the Phantom for his approach, but you're right that they did ultimately have very different goals.  There were probably some disagreements over methodology from time to time, but I'd say that they probably at least recognized and respected one anothers' skill.<br/><br/>Though, come to think of it, that singular obsession with death and bloodshed does mean that the Phantom probably got along well with Methu back when he was alive, since they both sought to cause death on a massive scale, albeit for differing reasons.  And then Anasil would probably come along and clean up after the two of them, further swelling the ranks of her armies of the dead...