The non-lethal bar brawls that were mentioned in an interview point at hand-to-hand combat, because bar brawls always have fisticuffs in other media.
Bethesda's love of hand-to-hand combat persists even in Fallout 3, so why not Skyrim?
From an Elder Scrolls lore perspective, it doesn't make sense not to have it, sense Khajiit prefer fighting hand-to-hand over other forms of melee combat.
Long story short, the not-knowing is driving me crazy, because let's face it, everyone at some point will want to know if they can kill a dragon by using a chokehold or breaking his neck with uber-strength alone.