For what it’s worth, I’ve had the opposite experience. I’m a 9-9.5 and I’ve had size 10 wading boots in both Patagonia and Simms that fit well. I figure you factor in your foot size+ a little extra for the neoprene sock. @Bluefisher if you’re in Seattle I’m willing to meet up and you could try them on. Let me know!
I wear a size 10.5 shoe in most brands, I have the size 11 foot tractor boots and they fit well, slightly large if anything.
I wore a size 12 wading boot in the previous patagonia aluminum bar boots, so these feel slightly smaller than older models. I wouldn't be surprised if the foot tractor boots fit true to your shoe size for most people.