So, I wanted to adv>
I thought this would be useful and I have also written to BB Support (RIM) that they should also add this to their guidance. Because, if you write to them questioning about the setup with BB 10 Devices they'll send you this link: http://www.blackberry.com/btsc/KB33522
I will also post in the Office 365 forum - so others don't waste some of the time I did & finally got it to work on a last ditch effort.