One of Microsoft's angles for leveraging better smartphone market share is to lure iOS developers to Windows Phone (see their API mapping tool). Although they would prefer such devs to completely switch, just getting them to co-develop would be a 'win' in many ways.
In that case, it'a always interesting to see Windows Phone development from the iPhone side. We've seen this before in a head to head developer contest (see here) and now we hear it form Steve Troughton-Smith, who makes numerous apps for the iPhone, including Orbit, Stack, Grace, Lights Off, SameGame, Speed, Nuker, Chalk and Doom. He even helped crack Airplay for third party apps a few months ago. In other words, he's rather prominent.
Via a recent Tweet, he's evidently toying with Windows Phone development and had this to say on the matter:
The more I make things with the WP7 SDK, the more I like it. I feel safe writing all the XAML from scratch
...I'd certainly prefer it to Android's SDK
We're sure that's the exact response Brandon Watson and his team would want from an iOS developer, so it's good to hear. It's also good to hear that such a developer is tinkering with WP7--judging by his past releases, we'd love to see what this man can do on our platform.