Knog Dutch Dog Panniers

I was looking through an old copy of Bicycling magazine and I saw the Knog Dutch Dog Panniers.  I really want to try these pannier/backpacks for my commute.  I have been using a backpack for a while and want to try my commute with panniers.

Image from Knog site.

I saw a deal for them at Outside Outfitters online.  Shall I make the jump?