The Bing webmaster tools are created and hosted by Microsoft, so they should work for any site, regardless of the software being used. Joe has created his add-on product In Site Analytics Pro, but this just works with Google Analytics data. I don't know if he has any plans to expand that to include Bing data as well. In any case, that product is only to let you work with the GA data within your site's environment, you can always go straight to Google and Bing to work with their tools (it doesn't have to be done within your site).