Recently Brandon Watson, chief Windows Phone evangelist for Microsoft, has been on a bit of a tear with a Windows Phone challenge to some tech blogging luminaries, following the availability of Mango.  So far the one’s we have heard of are Dilbert creator Scott Adams and Molly Wood from CNET’s Buzz Out Loud podcast.

Well today Brandon added a new name to his list of influencers that he wants to convert – Robert Scoble.

Now Robert has been really negative regarding Windows Phone in general, but then he is generally negative about anything to do with Microsoft (unless of course it is Xbox and Kinect related); but on a recent show with Steve Gillmore and friends Robert made the statement that the Windows Phone was nice on the surface but sucked when it came to depth.

Today though he let it be known that he would like to test out a Mango version of Windows Phone to see if it will change his opinion.

This might have given Brandon Watson another shot to get Robert to change his mind but I’m betting it won’t.