I spent a couple of days doing camera comparisons with my Pixel 3 XL, which I sent back on Friday (got my Note 10 on Wednesday). I found that I personally like the photos in daylight better from the Note 10, as they look just a bit more "punchy" and clear to me, but that's Samsung applying a deeper saturation and more sharpening. YMMV on that. Early reviews I read online said that it was on par with the Pixel 3 in daylight, but quickly fell apart in low light. I'm happy to report that wasn't my experience at all. Night mode works great, and while it would be nice to have an indicator of how long to hold it, it seems to be just as fast at the Pixel 3. The Pixel 3 did beat it out just a bit with clarity, but not by a very wide margin. I did some blind comparison test between shots from the Note 10 and the Pixel 3 XL with my girlfriend (who has a Pixel 3 XL of her own), and 9 of the 11 shots she picked were the Note 10 shots over the Pixel 3. She prefered the Pixel 3's selfie shot and it's Night Sight shot, but she said she really couldn't tell much of a difference in them.
Aside from quality, I like different Live Focus backgrounds, and being able to swipe up from a corner on the lockscreen to get to the camera is a huge plus for me. It's much faster for me to go from pocket to shot now. I'm going to a convention this weekend, so I expect to get some good use out of the triple cameras too. All in all, I'm beyond happy with the Note 10 camera, and coming from the Pixel 3 XL, I was very concerned, as that was hands down the best camera on a phone I'd ever used. The Note 10 isn't leaps and bounds better, but it is better, in my opinion.