If I have to carry anything larger than a bottle of Pepsi, or it looks like rain, or there is crap on the roads from rain, I take the Ural or Jeep.
Since last july I only have 2000 mi on the RE. Since Sept. of '06 I have 20,000 on the Ural. The Ural is just easier to take, less pre flight.
But there are some days when I just take the cage. Less of a fight to hop in the jeep, soda in one hand, and listen to Rush.