What worries me a little about this discussion is that the OHR has the potential to be inaccurate during any activity. I've noticed problems -- albeit minor ones -- during running, walking, and gym training. At what point does Garmin decide that an activity is too error-prone to be worth including?
I don't swim much so I, too, have no skin in this game; but I would be worried if Garmin decided, for example, that heart rate during rowing wasn't accurate enough to include.
I really don't know how to respond to your if I read it that would be lame comment. Yes, I have read several website that have done independent test and their findings were the same. I have also read several of your post in these forums and have found some of the things you've said to be accurate. Is that lame also? How do you ascertain information if reading about a topic in your words is lame?