Hi, Rob - the answer to question 1 is no, at least not now. A 4:3 anamorphic mode is high on a number of our fantasy feature request lists.
2. There's no such scaling capability on the BMCC's screen. It can be done easily on many external monitors.
For what it's worth, I shot a test a while ago that compared three different aspect ratios using a number of lenses.
http://bmcuser.com/showthread.php?3271- ... rphic-Test
Hope it's of some use...