Devka is thrilled with the prospect of fighting some of Graorins kind. If the size is anything of an indication they should be a worthy foe. Though he doesn't show his excitement at all, he just grunts his acceptance of the mission and gets up on the donkey.

When Milo asks how religious he is, Devka replies with a short, "enough."
Then he follows on silently for the rest of the journey.