Kinda playing around with this one myself. Had been using an Arkel grocery bag to haul work-stuff in (which honestly, isn't much). I have a nice Geigerrig hydration pack that I thought I would try out. I like having access to water like that. I find I drink more frequently this way. Also, I like how the bike handles.

The "pinch" that got me to consider changing though, was I didn't like carrying around my pannier whenever I stopped to do an errand. I have a Wald 582 attached to the bike that I can throw stuff in when I need to. If I do an actual grocery run, I'll probably use all three.