Might look good with ape hangers...
If anything, I think the stock mirrors on my '10 are too wide! I've ridden narrower bikes with narrower mirrors that worked just fine.
I have mirrors like that on my 09 c14. I took the stock mirrors off and fabricated some aluminum filler plates to fill the gaps left by the stock mirrors. It looks decent enough. The only reason I went this route was the fact that I drive in Tokyo Japan traffic and needed to make the bike a little more narrow. To my surprise the stalk mirrors I bought (cheap genic brand) clear both my stock screen and my cal sci large screen. I plan on converting back to stock when I get back to the states. I'll post pics if anyone is interested.