I wonder if Berroa would be an option. Switch hitter, although I have no idea if he's any good against lefties, presumably a better baserunner than Lukes based on his AAA steal totals, can play CF in a pinch (although wouldn't be necessary with Straw around) and presumably decent in the corners. It just feels like Lukes would have literally zero utility, whereas someone like Berroa could be used more strategically across multiple scenarios.