Carradice Saddlebags

I need to find a way of making that work with my Brooks pro, that does not have the clips at the back... not sure if the detachable clips would work in this case...

I used to have one on a modern saddle and it support it very well providing you're thorough on installing it, I reckon it's more than ample for such placement.

Plus, the one on the Carradice website look rather decent;