Although I never owned Wilsons, I have owned McIntosh and Luxman and I agree with audiojan, it would make the Wilson's dull and lifeless. You need a very bright speaker to get the best sound out of a McIntosh. Just an opinion having owned many speakers with both McIntosh and Luxman amps/integrated amps.
I have been demo'd several Wilson's and never once did they use McIntosh to power them.