Is it ok for a guy to wear womens Puma shoes?

I can get a cheap deal off a friend. I know that the shoes for women look different to mens so I'm not sure if it's ok or if it'll be obvious. They look like these: http://www.kicksonfire.com/2009/04/09/puma-first-round-new-colorways/womens-puma-first-round-ok-6/