Most reputable manufacturers have good left handed versions of their holsters. You say they aren't really left handed. Makes me think you may be looking at cheap nylon "one size fits all" lower end holsters. If so, I agree, they don't work well. Brands like Galco, Don Hume, Desantis, Aker, Bianchi, Safariland, and many others have great holsters in your price range that have dedicated and functional left handed models.
It has never held me back. Also, just curious, why a drop leg holster?