It would take away one of the (rapidly diminishing) benefits of participating in the Kindle Select program, which allows
publishers to market their ebook by having limited - time
freebie giveaways (
as well
as «countdown» sales, advertising, and a few other perks)
One caveat is Smashwords will be listed
as your
publisher in the Bowker record in order to receive a
freebie; however, it will not be listed
as your
publisher legally
as you still hold the ownership and copyright
as per the Terms of Service.