It seems to me that nine times out of ten the fish poke at the bait several times and usually don't inhale the bait all the way. I thought circles would be fish friendly but your hook up rate would be less than half.
California requires circle hooks only for salmon in the salt water. I read a story in Salt Water Fisherman several years ago, so there must be some data/ experience available.
Just .02
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In the legend of King Arthur, the Fisher King was a renowned angler whose errant ways caused him to be struck dumb in the presence of the sacred chalice. I am no great fisherman, and a steelhead is not the covenant of Christ, but with each of these fish I am rendered speechless.