Good read. My opinion - that of someone who has never served, never been tortured, and has never tortured another - is that there should be many forms of interrigations performed, depending on the person, place, and situation.
If non-lethal 'torture' of one detainee can save hundreds of our troops, do it. Is it that cut and dry? No, probably not. How do you determine if that particular person has the knowledge to save others? I don't know. Would I be able to administer the same acts I condone? Probably not.