Astro-landscape & adventure landscape photographer, wedding photographer, DSLR & lens reviewer / tester, destroyer of cheap tripods.
Yadda yadda yadda, just a bunch of Canon kool-aid.
The 6D2's lack of dual SD card slots and flagship autofocus is a solid indication that Canon is still firmly entrenched in their business tactic of "reserving" flagship features, in order to encourage the sales of 1-series and 5-series cameras. (Just like they originally did on the first two 5-series cameras, in order to sell more of their $8K 1DS's.)
It's really a shame that Canon shooters have continued making excuses for this marketing tactic, instead of demanding the features that CAN be put into a camera in this budget.
I know this comment will get numerous replies of classic fanboy brainwashing, "if they put THOSE features in a 6-series, they'll lose money on 1DX2's!" ...Meanwhile, Nikon has been putting flagship autofocus and/or dual card slots in various sub-$2K bodies for, oh, almost ten years now. (To date, Canon's only camera with those bragging rights is the APS-C 7D2.) For Nikon, it's getting cheaper and cheaper too, with dual SD slots in the 7000 series, the 300/500 series, the 600 series, and the D750.
The lack of 4K video is also sad, as clearly Nikon and Sony have no qualms about putting half-decent (though arguably not fully professional) 4K into cheaper and cheaper cameras.
Canon could have at least easily done a "budget friendly" 4K output, and reserved whatever high-quality compressions / file formats they want to for their C-series or at least their 5-series, ...but instead they're taking the "all or nothing" approach.
Canon shooters, stop making excuses for this nonsense. Canon needs to start acting as if they are about to lose their #1 position in the market, and get highly competitive. Even if they are NOT actually at risk of losing that #1 position, they need to start taking the competition more seriously.