The answer is, maybe.
Turn you Nike pad on and keep it moving so it is sending a signal. At the same time go to the mannual set screen for pairing the receiver with a foot pod and switch it to seek out a pairing. If the Nike operates off of the ANT+ signal system it will attempt to pair.
In the mean time I will do a little more research. oh, I do know that I have paired garmin many non gamin devices.
ADDED
From the Garmin end it should work. Nike is less than forthcoming on the net about pairing. There is a small FAQ question noting a special code the Nike pod puts out... But everything looks like the ANT+ signal.
Review page 5-8 of you manual and see if the Garmin will pickup the foot pod.