"I'm sure your peers have matters well in hand."

It sounds dismissive, but they were chosen for the role because they were suited to it, no? Emet-Selch is confident that there is nothing to worry about. At least, in Erichthonios' present day.

"Well, if you saw no-one else familiar then I suppose we shall have to get along. As a Warder, you will be proficient in containment magicks, yes? That could be useful if another threat arises here."