I'm still weighing options. I'm not going until 2020 so something better might come out by then.
I have the Simms G3 waders and wading boots that aren't terrible to hike in that I used on the moose hunt. They were absolutely the ticket for that hunt, I'd have gone over hip boots several times. I also like that I can sit on anything wet and not worry about it with them. I sat on a lot of wet stuff around camp in my Kuiu Yukon pants also though and never had them leak. Both worked great. I think we will be a lot more mobile and hike a lot more on a caribou hunt and I am just not sure I want to be in waders the whole time. My feet did sweat a lot on the moose hunt but I never had any trouble with them and they never really got cold. I had Darn Tough full cushion boots socks on inside them. I treated them every night with Lotrimin and put on dry socks before bed. If the info helps anyone my size 12 Simms G3 boots weighed 64oz and my chest waders weighed 42oz. Figure that info might be handy for someone doing a fly in hunt.
Camp shoes on that hunt I took a pair of the lightweight Tingley rubber boots. They aren't something I'd want to hike in a lot, but they were great for camp shoes when everything was wet. Having them let me get the waders off and inside out to dry as much as possible when I hit camp at night. Also they were very convenient for a quick trip out of the tipi for anything. I went a size up to make them super easy to get off and on. My old pair I even trimmed the top down quite a bit with a scissors to make them lighter, might do that to this pair also. Without trimming the size 12 Tingley boots were 24.5oz for the pair.
I emailed Neos yesterday to check on the availability of the River Trekker but have not heard back yet. I'll let you all know if they reply.
Another option I have is a Ridgeline supply pair of Yoder chaps with the Tingley rubber boots attached. I would not want to hike long distances in them either, same boot as above. They weigh 47oz with the heavier duty chap and could be strapped to the outside of my pack until needed for river crossings or wet areas. They are a hip boot height option. They make them with Lacrosse Alpha burley boots also among others. Mine work well on the river around home for unsticking the boat from sandbars when the water is cold enough I want to stay dry, but it's to warm for waders all day.
We will be dropped off by airboat along a river. I plan to email my transporter and see if crossing the river might be an option with chest waders or not. Crossing might open up more country to our group. That will make a difference on if I choose to take chest waders or just a hip height option.
I am sure I'm overthinking it, but I think footwear might be one of the more important gear choices for this hunt. An ankle injury could really screw up the hunt. I can handle cold wet feet, done it many times, but I prefer not to!