The Zf is shortlisted in my search for a modern full-frame mirrorless camera, but ergonomics are extremely important to me, so I would only purchase it if I was confident I could find a grip that suits my needs.
I find the Fujifilm X-T5 and its Smallrig grip to be a perfect ergonomic combination. The finger falls naturally onto the shutter release button and the built-in thumbrest on the camera counterbalances things nicely. Importantly, there is no unnatural index finger stretching required to reach the shutter button (an unfortunate reality I find when using my Nikon F3 with a grip - mildly uncomfortable, but usable).
I am wondering whether there is any grip that feels similar to the above, whether it's the Neewer CA079 or the e1sky wooden grip that has been linked previously. My concern with the latter is that the shutter button appears to be quite far from the divot in the grip where the middle finger is designed wrap around, necessitating the aforementioned unnatural stretch to reach the shutter button. Can anyone chime in on this?