Chrysta does a furniture ad.
Here it is: Tony Northrup will be recommending that professional photographers NOT purchase the Z6 or Z7 because......wait for it......the camera does not feature dual card slots. This is his position having not yet used either camera and I will be interested to see if his position changes once he is delivered to New York City, feted and entertained by Nikon's PR agency who will, no doubt, provide a rational and defensible argument as to why, going forward, it's okay for their two cameras to only have one card slot...and a QXD at that. That happens, I think, this weekend so I'm sure we'll know more after checking Tony's YouTube channel on Monday.
I'm neutral on the whole "dual card slot imbroglio." I understand the only good rationale and that is to have a duplicate copy of important, once in a life time, photographs from non-repeating events or imaging opportunities. Got it. If a card goes bad you've still got one in the second slot with which to save your bacon. But I have to say that I have either been incredibly lucky over the years or the incidence of card failures (among authentic cards from well known makers) is wildly over-reported.
It's been a while since I experienced any sort of photographic equipment failure other than just wearing out lenses or something occurring from drop damage. But I do get the point; a second card slot is a relatively cheap and easy way to get a redundant back-up.
This is, of course, why every photographer worth his government issued, official professional photographer licensing card here in the U.S.A. (not a real thing) carries back-up equipment for everything. When I go on location to shoot a non-repeatable corporate executive head shot I always take along duplicates of all mission critical equipment: A camera and a back up camera. A range of lenses and an exact duplicate of the first range of lenses. Back up batteries for each camera. A back up camera strap for each in case my strap frays or unexpectedly snaps into pieces from overuse. A set of studio flashes, and a second set of back up studio flashes. Enough memory cards to back up the back up cards in the main and back up cameras. I generally bring along a second set of prescription glasses and a second set of prescription sunglasses.
But that's just the core gear. I bring an assistant, and also a back up assistant in case the first assistant eats some bad mayonnaise at lunch and becomes incapacitated. I bring along a second set of clothes for myself and also for my assistants in case we fall in mud or some fiber eating microbes begin to disintegrate our original clothes. I pack a lunch, and then a second lunch in case the first lunch is lost or destroyed. I bring along empty Pelican cases just in case our primary cases are somehow destroyed during the shoot.
I carry plenty of back up tripods because you never know when one will short circuit or become humidity damaged. We bring duplicate light stands just in case someone runs over our primary collection of light stands with a forklift or other warehouse vehicle. And soft boxes! Dozens and dozens in all sizes. Many duplicates in case the fiber glass rods snap...
Finally, we bring along a second car in case the first car breaks down, either on the way to or the way from, our client's chosen location. All of this duplication is cost intensive but I don't see how else one could call oneself a "professional photographer" unless you are willing to dive onto the top of a live grenade of equipment spending and required portage costs in order to give your client unmatched service and piece of mind. The cheap bastards deserve nothing less...
At times though I look at this endless imagined need for back up and duplication in different ways. I've never acquired a back up spouse and so far I've experienced no job stopping corruption, or total spouse failure. I only have the one house and that's been working well since about 1995. And I've actually flown in planes with single engines and if there was ever a perceived need for redundant back up that would be it.
I would be interested to know if you've recently experienced any card failures from modern (post 2010) memory cards. If you routinely save money by buying the Russian surplus or Chinese counterfeit cards from the Amazing "marketplace" you are on your own. But if you are using current "big brand" cards that came from a trusted source I would be most interested in being proven wrong and saying a big mea culpa to Tony Northrup (whose videos I actually very much enjoy --- even when I don't always agree).
Let me know if the single card slot on the Nikon Z's is really the big "deal killer" for you. And why.