Even though I've gotten used to the R5 ergonomics fine and it has been years since I used my Nikon D7000, I distinctly remember both these points as the 2 that impacted me the most.
canon's front dial makes your wrist pronate 1, your fingers are no longer firmly holding the grip 2, your pinky is no longer on the grip, especially with small bodies like rp 3.
I'm not sure if that is the right terminology, but coming from the Nikon that is
exactly how I felt about the front dial. You'll only really notice this if you often have wrist pain like I do (*), and you've used a Nikon for a while.
It's not that Canon's way is wrong, but one needs to hold the cameras differently. Let me explain:
With the Nikon D7000, I could hold my arms straight out in front (like a pistol with extended arms) and then grip the camera. The front dial was then changeable by only moving the index finger. Think shooting with the screen at arms length. I'd mostly keep that grip position also for shooting through the VF.
With the Canon R5, if I hold the camera like that I needed to move my hand and/or turn my wrist slightly to change the front dial. Of course a Canon shooter would never hold the camera like that. Instead, you'd hold the R5 to your face/EVF, and then grip it with your arms pointing down (like a pistol shooter at the Olympics, arms
not extended). Then everything is fine and both shutter and dial are reachable. You just have to hold it differently.
Sidenote: the Canon dial itself feels much better to me, the Nikon one always felt a bit too recessed and hard to turn.
Nice article.
The position of the off/on-switch is the biggest problem I found with canon. I realy cant understand why they won't put it around the shutter button. It works perfectly on Sony and Nikon. Its just the perfect spot.
It's extremely convenient as you can carry it one-handed without changing your grip at all. I must've toggled the Nikon on/off switch probably for every single photo I took while travelling. Especially with a DSLR you don't need it to be on most of the time.
With the slightly different grip Canon requires and a mirrorless camera having to be on anyways I've gotten used to just letting the R5 in power saving mode. Works very well.
(*) like all the crazy ergonomic mice and keyboards you see, I'd never thought of using those until I suddenly needed to.