As a rule, Eccarius doesn't get his fangs out for sex either; just turning and murder, mostly—at least not recently, that is. Many years ago, before he started the Children of Blood scam, sex might've been a part of the 'ritual' too, if he found the person attractive at all, but these days his 'acolytes' were all such losers, he had no inclination to fuck them.

"As if you wouldn't regenerate," he replies nonchalantly, after pausing to take a breath. "But no, I prefer you with your dick attached, not to worry." Cassidy better hope he's not lying, because following that, he bites down for real, but only hard enough to break the skin a little as he resumes sucking fervently.