Herrnarrel hasn't had any previous contact with the Undead in any form, but being in Kaer Maga for even as little time as he has, has inundated him against rash judgements based on species, religion, or profession. He might be a little wary of everyone based on the city's reputation alone, but as far as he's concerned, everyone has their place. Of course, not much stands up to being burned to ash, or melted down in a pool of acid if things get too hairy for him, so he's not too worried either and even less so if he's with the right group of... people?