I have accidently gotten through once with a small multi-tool but wouldn't want to take too many chances on it. I also thought long and hard about the knifeless fuse from Leatherman but decided that there was too many reported incidents of individual looting ^h^h^h^h^h interpretation by the TSA at various locations to risk something in that price range. So I finally settled on a wenger clipper for pocket carry while flying.
I also stash a Gerber Artifact (usually without the blade but sometimes I forget) in the PSK.
Not great choices compared to what I normally carry but much much better than nothing.
- Eric
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You are never beaten until you admit it. - - General George S. Patton