2.23 is the best I got. Mainly because I'm a slow-turner. Because I turn slow I'm more efficient, but because I know the whole solution, efficiency doesn't help.
But if you can plan the entire first face in inspection and the rest is algs don't you have to be a fast turner to get good times? Skewb is one of the "kiddie" events like 2x2, 3BLD, and Squan (debatable) where it mostly relies on how many algs you know and how fast you turn.