Hi,
HP SIM for monitoring is for free, the configuration stuff is under Insight Control license so also not for free.
Oneview 1.0 now is more configuration compared to monitoring (not really that much yet) so yes you need a license. Know that also VCEM, which was a separate license before also, is now included in the Oneview license.
Give it some more time, Oneview will be much extended with more great features, we'll see how it continues with the licensing saga...
FYI I am currently posting a list of blog posts on the installation and configuration of Oneview... Check it out!