Anyone use smashwords to sell books written with scrivener?

Did you have problems with formatting because of it or was it a relatively painless process to compile in word and the upload to smashwords?

Anyone? I plan on uploading my book to smashwords and they have kinda a tight format restrictions if you want them to distribute to barnes and noble and amazon for sales there. Kinda worried that maybe I should use word instead of scrivener. Anyone have any experience?