I had tried to use an adapter to HDMI/Thunerbolt but it just wasnt having it where the USB fired up straight away. My only concern is that it seems a tad loose and if it comes out and you push it in, Bridge opens/LR opens etc but thats just my settings.
No idea if it's possible to get the 5D2 to tether shoot into the MBP with CS5 (I assume Photoshop), but I do know you will need to do it via the USB interface...