I had a Jamis Coda which sat unused after I got my road bike. I finally sold it 9 months after getting the road bike. The geometry (at least for me) was too close to the road bike to ride much differently and I prefer drop bars to flat bars. I'm thinking about picking up a Trek 7300 off Craigslist though for casual rides and trips to the store. That bike does ride much differently than a road bike or the FX and I won't feel the need to get all "kitted out" just ride 1 mile down to the Redbox kiosk.

I would keep it for a couple months to see if you use it though. It's not like the value is going to change that much in a few months.