When Power View appeared, one of the big outcries was "but what about connecting to existing cubes!". Great to see that the SQL Server team have addressed that. A CTP that allows connecting Power View to SSAS Multidimensional cubes is now available: http://blogs.msdn.com/b/analysisservices/archive/2012/11/29/power-view-for-multidimensional-models-preview.aspx
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