At HIMSS this year I was able to test drive the BlackBerry Playbook and at the time thought it had the potential to be an alternative to the iPad. The reason for this optimism was due to the form factor, display and multi-tasking while even knowing that the email was done via a bridge solution.
This that optimism went away after reviewing the Playbook in an actual enterprise environment. The lack of email was a show stopper as ATT currently is blocking the Bridge application. In addition, there is currently no Citrix client for the device either. When I inquired with a Citrix Rep there was apparent time frame for client to be released.
At this point in time, the Playbook is merely a consumer device that can't play in the enterprise.