this stuff isn't really "missable" by means of "you accidently just walk by not seeing", rather you can go one choices path, and replay later with the other one. i kinda like it, along with the "you have to choose the bad guy path knowing it's bad" kind of explicitely being told it's a hm, morally questionable? sry lack'o'words.. pick you do.
people don't click the "IMA PEDO" if they don't want to know what's behind that; they shy away.
i do save before choices, almost every time, so i can load that later and see what's behind the other door. have to know.