I ran across this sentence in Sanderson's Warbreaker and it immediately sounded off. I'm sure the fault is with me, but I wanted to double check here to clear things up. Sentence in question: With Nightblood, she and Vasher had spent much time in thought, then finally chosen a simple, yet elegant, Command. For whatever reason I have an urge to substitute "chose" for "chosen". Regardless it's an awkward sentence for me.