I note that Sony is recording to MVC and JVC to LR Independent. I can't quite figure out Panasonic's consumer format. Are any of these formats implementing the ISO standards for stereoscopic video?
Here:
ISO/IEC 23000-11:2009 - Information technology -- Multimedia application format (MPEG-A) -- Part 11: Stereoscopic video application format (http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=52059)

and here:
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (http://mpeg.chiariglione.org/technologies/mpeg-4/mp04-mvc/index.htm)

Yes. Panasonic also uses side by side squeezed in its consumer 3D format. They all adhere to ISO and HDMI1.4 guidelines. JVC and Panasonic use side by side and Sony uses MVC.