No.
If you buy your own ISBN, you could (I believe), but the Smashwords ISBN is only good for Smashwords and the places it distributes to.
Thanks for clearing that doubt.
(but which lists Createspace as the imprint)
What does this mean?
Can you buy the $10 ISBN down the line when you offer a Createspace print version, or do you need to set that up when you do the ebook version?