if I were an IT manager in a company, and wanted to have my employees have their smartphone to do corporate emails, but not wanting only BlackBerry phones, I would look at BlackBerry Fusion.
BlackBerry Fusion is a bit like BES (= a lot of bells and whistles in terms of features, and in term of security), but for all kinds of smartphone OS. BlackBerry of course, but also Android, iOS and in a near future, Wndows Phone. "one ring to rule them all" in a way.
The search box on top-right of this page is your true friend, and the public Knowledge Base too:
Good news, I have access to OWA without the VPN. I am checking this option. Hmm, it would be great if I could have a BB just for testing. Does anyone know an BB expert in Hamburg, Germany? BR, Christopher