Originally Posted by
merlinextraligh
Any power meter is also going to collect HR data. Lot's of people howeverr choose not to bother with the HR strap when they use a powe meter.
Also, with the exception of the TT stages, I don't think you'll see many rides basing their effort on the power meter in the race.
Most people racing with power meters don't look at them during a race, or do so very infrequently.
I doubt the tour riders would be different in that regard.
Heart rate monitors are useful. I have used them in the past, but after a while you get to know where you are. Plus since I am not a racer, it was real depressing to see how wimpy I was. For me to get over 150BPM is a real pain in the side.