Great news, thanks. Now the only question is how accurate it is, and also if there is any lag. My main use of a HR monitor is for interval training when I may switch from a jog to a full sprint and back again at intervals and am interested in my HR during these intervals. So whatever I get can't have much of a lag time in displaying the correct HR.
The MS band does look promising though.
The following is direct from Microsoft. Think you will be pleased. I was.
"Microsoft Band heart rate sampling frequency
Exercise modes (Run and Workout): Heart rate records every second
Sleep tracking : 2 minutes on, 8 minutes off. Repeats throughout duration
All other times : 1 minute on, 9 minutes off, and repeating the cycle
Manual: You can force-check your heart rate at any time by tapping the Me Tile
When the Microsoft Band is just being worn under regular conditions, users can expect ten-minute intervals for heart rate data collection, which is six data points an hour. During sleep, the heart rate monitor is working slightly harder, taking a longer periodic sample.
Finally, during exercise when the user puts the Band into Workout or Run, the Band goes into a high-performance mode collecting a user's heart rate once every second.''