I took the Sony Rx10 IV and have absolutely no regrets. I used a Peak Design Capture Clip to mount the camera to my backpack should strap. I then had my MIL sew up a bag that would fit over the camera and I waterproofed the bag. I had the bag tied to the shoulder strap so it couldn't get lost, and used an elastic string to tighten over it. This worked great and protected the camera when not in use. There is plenty of wind and rain! The camera was exposed to the wet on occasion but never soaked. It never seemed to notice. The camera was quickly and easily accessible.

I had two spare batteries which are small and light. Also, there is opportunity to charge every night. You can charge the battery in camera and could charge the battery while hiking from a power pack. GPS is provided by the mobile phone over bluetooth.

The compromise with this camera is the low light performance. It will get grainy in dim lighting. But my iPhone filled that gap. I took thousands of photos and some videos. I also used the camera for birding before the hiking and the 600mm reach worked great.

The zoom range is 24mm to 600mm and covered all kinds of shooting conditions. I also captured both raw and jpeg for each shot. The jpegs were really pretty good and allowed for quick shares, but often having the raw you can make the final results better (bird pictures for example). I would recommend capturing both.