Warn-R wrote a review of Suunto Ambit HR Altimeter Watch on March 15, 2013
So far have only used it for indoor training in the first month of ownership, but have been impressed by the functionality, ease of use, and in particular the usefulness of the movescount.com integration.
Be prepared to spend a little time getting to know the watch. Think of the watch as a new friend, and like any friendship, it requires a little give and take, as well as a get to know you period.
The integrated HR monitor has worked nearly flawlessly. I have on several occasions need to refer back to the pdf manual for the watch available on suunto.com to troubleshoot pairing them together, but once I "moistened" the electrical pads, it has worked perfectly. I now track every exercise/move on the watch.
Don't hesitate on this bad boy, it most certainly is worth it!