I've seen those Campy guides both with and without the "lower" guide on the bike's L side. If the lower guide is to be used with a "stopped" FD and a piece of housing, there should be an opposite stop on the lower guide, as well. I can't tell if there is one or not.

I've used a Campy guide that did not have the lower guide, and my shifter cables routed along the side of the DT all the way down, then up and around to the FD. Using a lower guide would have been an unnecessary change in that routing, it appears.