That 3rd picture clearly shows an inked out "Mark [something]" insignia below the lens release, but this is definitely not a 1-series camera...just look at any pictures of a 1-series body and you can rule it out. It looks similar to a 5D Mark II, but it's different...slightly different body shape. This is probably a 5D Mark III. Considering the ridiculous disguise, it's likely a prototype or pre-release tester that they want to keep under the radar. The big over-the-shoulder body could certainly be hiding an external video recording module (though it'd probably be a fraction of the size). Or this is an old-shcool ENG guy with a 5d Mark II, and he modified his old OTS camera instead of dropping a grand on a Zacuto rig hahaha.
If Canon were nice, they'd put out an awesome 5D III and sell an external video module to enable RAW or better-than-line-skipped-1080 video for those of us who want to shoot HQ full frame video. That's if they were nice. They seem to make a lot more money by just doling out periodic upgrades and dribbling out pre-existing technology