My Acorn bag does not have a wooden dowel inside (unlike the Carradice Nelson). I personally never use the little cords that connect to the drops. I use the four straps on the bottom to connect the bag to my Nitto Mark's Rack (from Rivendell). I also slip the little U shaped portion of the rack through a leather strap on the bag. This is all pretty quick to attached and remote. It would be a bit of a pain if I were to do it multiple times a day but is not an issue for me at the start and end of my commute.

In the past I used a decaleur from VO but now find no need. Maybe if you found attaching the bag via the bottom straps a pain the decaleur could provide a measure of convenience but it is not needed.