I have not been able to do so.
I can connect to the account using Office365 Outlook Web Access (owa) in a web browser, so I know the account exists and the credentials are good.
I can connect my Outlook 2010 to a regular exchange account on my enterprise exchange server, so I know Outlook 2010 on top of Crossover works.
However I cannot get Outlook 2010 to connect to the Office365 account. Has anyone done this successfully?