(fallen london stamps by while SGE!Lucent will absolutely use his nouliths for self-defense to lethal effect, if he has to finish off a wounded enemy or otherwise kill someone who isn't enough of a danger to break out the magicks, he uses a dagger if at all possible. he's a pragmatic soul who's long broken with Sharlayan's "All Violence Bad, pacifism no matter what" philosophy, but he does still feel strongly about using a healing art to harm and kill people. better to have the blood on his own hands than on the implements of healing.
(this is another reason why he keeps a second, exclusively-clinical-use set of nouliths around)