I am vastly unimpressed. I tried their everytrail.com link and I would describe the data available there as superficial and not particularly useful.

I don't think I need to monitor my heart rate or cadence. With lots of experience, I can tell when I am tired or not (no flies on me!).

Maybe it's years of carrying one while on duty, but a low priority item in my gear on a normal recreational hike is a radio. A full fledged PLB would be potentially more useful.

Precise knowledge of your location, elevation, etc. can be potentially useful, but more often I have known exactly where I was located The problem was "How do I change my location?"

All in all, it seems like an attempt to substitute technology for judgment.