Without implementation of provisioning feature - no. It definately will not tell to Exchange server that it is provisionable if it is not. This is simply illegal.

If you need the device to be provisionable - let Nokia know somehow. I personally strongly against having this feature - want to have more privacy and don't want Exchange server administrator to manage my device. I have very bad experience with this feature in S60 when I lost all my data on the phone which was connected to my employer's Exchange. But I understand that big corporations at other side of the Ocean usually think that the data in employee's device is fully owned by the company and the employee is not supposed to store anything personal there.