MB: Yay or Nay?

I have the closed toe MB Mary Janes and did not size up -- despite the NM web site warning. They fit me perfectly so I'm happy I did not size up. I take the same size in both MB and CL.
 
I just rapidly expanded my MB collection this year - all those sales at NM - so you're not late at all ;)

For the open-toed Campiby I'd stay TTS. I went up 1/2 size for the pointed-toe Camparis.

Oh and if you're up for different colors, Barneys has this shoe on sale in nude patent or teal for $380 - limited sizes, though!