I recently purchased the Bug from Arkel and am very pleased with it. It is well designed and quite comfortable as a back pack. It goes on and off the bike in just a few seconds.

The only flaw in the design is the j-hook which secures the bottom of the pack to to the bottom of the rack to prevent it from bouncing. This hook needs to be moved up and out of the way when using the bag as a backpack; however, it is the one thing they have forgotten to include some doohickie to secure the hook in this position. It is possible to do so, but it is not something they seem to have designed for, which is surprising since they have designed for all other aspects of the bags function.

Overall a very good pannier/back pack.