So, I've put off buying a new MBP (and even posting on these here forums) for about 5 years. I'm ready to pull the trigger based on the rMBP's multi display support. My primary question is whether the rMBP HDMI port will power a 23" Aluminum Cinema in Portrait mode @ 1200X1920. I'd like to have a home setup with 2 Portrait oriented 23" Cinemas on VESA mounts on either side of Landscape 30" Cinema, and I'd love if I could power them (usably) from a folded up rMBP. Thoughts? Can anyone confirm or deny Portrait mode from the HDMI port on any display?