As many of the tech lenses is f/5.6 wide open (the Rodie 40HR is f/4) it's naturally a bit more difficult to peak than Zeiss Otus 55 at f/1.4. It's easiest to peak focus if you in the same view can see both in-focus and out-of-focus areas, and the likelihood that you do that increases the larger the aperture is.
But there's many other factors as mentioned, live view frame rate, how sharp live view renders, the screen on the back, and the gearing on the camera body, how rigid the body is. Everything adds up to the total experience.
Of course it also makes a difference if you shoot at f/4 or f/11-f/16 as the smaller apertures mask focusing errors, and how picky you are when pixel-peeping the result. You'd probably shoot at least f/11 with that type of lenses which gives you some margin.
There's also a bit about training. I'm used at focusing with ground glass thus I can work with almost anything
. The more you use the camera the better you will become at handling tough conditions. Live view becomes worse the darker it is for example, and with training you can handle darker and darker conditions.
I've noted that what's "easy" to one person can be really difficult to another, so it will be hard for you to get an accurate answer to the question. My expectation is that you will feel that it's a bit more difficult than you're used to from your DSLR, but still not so difficult that you become bothered by it. I haven't used your DSLR combination or the Cambo combo side by side though so I cannot say anything for sure.
If you're aiming at an CFV-50c you should know that the live view is not the same quality as an IQ250. I don't know the details of what differs (I would guess lower framerate and worse at handling difficult light conditions), only that it's something you should look into before buying.
