NRoute has a Blend trigger that allows to bind gestures to ICommands. I talked to Rishi about it and will probably borrow some code to put in the MVVM Light Toolkit (in addition to EventToCommand). I am mobile now so cannot check but i wouldn't be too surprised if the blend team has something too, check the Expression Blend Codeplex site. Mark Smith (our own Julmar) also has an implementation.
Cheers,
Laurent
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