"Light" is the key word here... The front rack for the Tikit will hold a small to medium-sized pannier, and the rear rack is set pretty low (16" wheels don't give you a lot of height to work with), so again, you're looking at a medium-sized pannier. I've got a set of Jandds that will work, but my Axiom touring panniers will nearly drag the ground.

I use my Tikit mostly as a travel bike and light utility riding around town, with a racktrunk on the rear rack and maybe one of the Jandd's on the front. Those I've seen do more touring style work with it will get the suitcase/trailer, and use that to haul their gear in.