I use a Topeak trunk bag with fold-out panniers. I only need one on a normal morning commute, to carry my pants and belt. Other stuff fits in trunk bag.

My bike stays inside the house with the drive side up against the wall. For that reason, and really only that reason, I always use the NDS pannier to carry pants and belt. I find it a bit of a PITA whenever I have to use both of them. But I don't think I have ever used only the drive side one.