Kayneth will be moving bones into the crypt in Caer Glaem for the most part, though so long as no actual conflicts crop up between the sides he wouldn't be terribly averse to bringing some over to the Unseelie side, if he comes across any/anyone he doesn't outright dislike asks him for aid. After all, the fact that he would have no issue eviscerating Unseelies on the battlefield doesn't mean he'll be unnecessarily rude when there isn't a battle.

He will also be fighting horrible smiledogs because heck yes he will.