I have a Kona Jake as well, and I do find it slower on the road than my road bike (compact geometry). The Jake has no toe overlap so it's obviously going to have a bit of a longer wheelbase and less responsive steering.

Part of it I think was the heavy stock wheels on the Jake - I've since upgraded them but since I keep my CX/gravel tires on them I haven't tried it out on the roads for any comparisons lately.