I also need Office 365 to do my work and think the web browser version of Office 365 works well enough in Linux to merit consideration for use as well.
So anyone who's dependent on MS Office, give Office 365 a try via Web Browser. It's quite good, Microsoft is doing a great job at making their products work via browser for other desktop / laptop / mobile device platforms.
(No, I don't work for Microsoft .....)
O365 sucks big ones. Braindead and buggy.