The weight on my D810 f.i. is want I want in a camera. I don’t like them to be too light, because I don’t get the same sturdy grip and shot!
But you write; "One slot", do you mean you’ll have trouble with only one XQD card slot?? Man, I wonder what you did back in the film days with only 36 exposures a film... 🤔😃😉😊
I don't like too lightweight / small cameras, but the F7 is doing alright. It really feels like a full-grown Nikon DSLR.
If the single slot was a SD-slot, I would agree. But it'a a XQD card, which are much tougher and resilient. Last week, I had a CRD Err on my D850, and guess from which slot it came ? The SD slot of course. No, one XQD is fine. And if you want a real back-up, then you should opt for a spare camera.