Used the Nike+ this morning for the jog/walk and let me tell you it was awesome. Didn't have to fuss about anything. Just turned it on and went. I also wore the Polar HR monitor as always and the two devices tracked virtually the same distance. Pretty accurate. Guess it works cause I'm small.
Nike+ told me:
Started run at: 9:45a.m.
Total time: 30:07
Pace: 11:38 (which will improve as I do more jogging and less walking)