Hello Loeffen,
I am kinda new to micoach but i will try to answer based on my experience. I recently bought the HRM and the Speed Cell both with the iPhone connect adapter. I found out that i could use the Speed Cell with the micoach app in the iPhone (where it was used as a stride sensor) and then i could login to the running app in the iPhone and sync the Speed Cell data (it was used as a Speed Cell). So i believe that even when the Speed Cell is used as a stride sensor it does indeed save the data in its internal memory for later retrieval.
Hope i helped (and got it right)!
