I've run vintage steel q/r skewers for fixed-gears since 1998. The last decade or so I've standardized on '70s M.M. Atom/Maillard pattern skewers, which so far have never been a problem and haven't slipped. They're all steel with an internal cam, cheap and plentiful. I have not felt the need to run chain tugs, but perhaps my pedal action and power don't require them. I've run this setup on both forward-facing "horizontal" dropouts and rear-facing track ends with no issues.