I've owned a Leica Q2 and Q3 and the former was what finally got me to ditch my phone's camera and get back into photography. Leica's color science is some of the best out there, even if their technology stance is a bit like Apple's in that they're not the first to do anything but often the first to do it right.

That said, I outgrew the Q3, sold it for pretty much what I'd paid for it and bought two Sony cameras and some lenses. I got tired of "zooming with my feet" and the Sony 70-200mm GM II shoots like it's from the future.

Regarding colorimetry, like we used to call that before everyone calling it "Color science" on Youtube, Panasonic and SIGMA are great too. SIGMA being awesome at it thanks to their expertise with Foveon sensor. No need to buy Leica to have nice colors.

a7iv + 70-200 GM II shooter myself too, I feel you! Even in my day to day travel photography with my partner I'll still drag that combo with me. It's the one range that you just can't easily replicate with a phone and it looks totally magical, whereas things like wide angle photo and your regular 35mm are "close enough" that often I'll just use my phone instead.