Panniers - Racks - Bags - Bike Luggage

So all of these narrow little front porteur style racks that you see, they're all intended to be used as half a rack/decaleur combo?

Yup, however a combination of a Klickfix system and rack can also work if you're handy with a spanner, like what he done.

Ironically, my old school cotton bar bag with steel decaleur work out a lots lighter than the klickfix/bag combo.