Thanks to both replies. 🙂
I can now confirm that NO apple watch data installs on the iPhone 4s when updating to iOS8.2 for anyone else who is wondering.
No useless icon and on iOS8.2 😎
On a side note:
Transition between screens and apps seem more fluid than 8.1.3
Calendar dots for events seem to duplicate for a brief second on the far right hand side of the calendar if there is an event in that date
(never done this in 8.1.3)