When syncing with Exchange, do all email features work? I use Colour Categories a lot (GTD) and appointment Flags. Are they supported in the Maemo email software at all?

Are there any issues with Tasks and Contacts? Are the contact fields in the Maemo contacts software sufficient?

I am planning on getting a personal Exchange server VM sorted out especially for this, so I would appreciate some comments on how I can use the N900 for these things.