Outstanding boot!
I read a lot of the reviews here and on third party sites for these boots and a lot of others (Simms, Orvis, etc). I went with these for a number of reasons: Patagonia, Danner, made in the USA, great reviews. I wear a 11.5 - 12 in anything else and based on the majority of the reviews I read I decided to go with a size 12 in the boot. It felt a little tight initially with my waders on but after my first hike to the river and a few hours fishing the boots felt awesome. With the Yulex wading socks they feel a little less snug. They are VERY comfortable to wear and hike in. Traction in the rivers on the Olympic Peninsula w/o the studs was better than expected. I'm either buying a set of Danner hiking boots for my next set, or using these.
However, on the second use, one of the speed eyelets at the top ripped right off. Not a show stopper, but frustrating none the less. I reached out to Patagonia and the customer service was OUTSTANDING. Problem=solved.