We're all basically huge jocks here at Engadget </sarcasm>, so anytime we can combine our love of cross training with our love of consumer electronics it's a pretty good day. Only a thousand times less interesting than Dancepants, the Ripxx Personal Measurement Device (as you may recall) integrates a GPS, accelerometers, and gyroscopes for tracking your performance and movement in all three dimensions. And now Apple users can get in on
