I can see this happening
I work in IT, one of my friends who is a Trade Paint Supplier and my Mum who is Mad/Stupid/Old got windows phones. Both found them easy to use and fast, even my Mum with the bottom of the range one. I tried them and thought it wouldn't hurt to get the 1020 for the camera knowing the cooling off period would end 2 days after I returned from holiday. I would not go back to Android if you paid me now and my work supplied iPhone is only used to make calls, all my work email is done on my windows phone.
My Wife prefers her iPhone as do some of my team at work, but those who have given MS a chance have all been presently surprised. My Boss has decided that when the contracts end we will have midrange windows phones as our new handsets.