Our company has switched completely over to the new iWork. The learning curve was short and easy and productivity is up significantly. Pages and Keynote are more efficient to use than Word and Powerpoint and unlike office, they are completely compatible across desktop, mobile, and web. What we used to use Excel for in advanced ways is now handled by web based databases.
Internal collaboration is really good in the new iWork versions across Mac, Windows, and mobile devices and when communicating with clients, we send over PDFs instead of raw files and this insures no matter what software they have it will always look exactly as we designed the document.
All in all it feels really good to be free of the bloated Office, never ending security updates, and formatting and compatibility issues finally.
What, specifically, is your company that doesn't need to use Office products?