I love running my drop leg holster, and the whole point of it is to run it as high as possible so you aren't stretching to pull it out. It should be just low enough to be clear of your gear and no more. Where I run mine my hand naturally rests so it takes little movement to get the pistol out of the holster and at least pointed towards the target as I'm bringing it up.
Still it's all about what works best for your and how you run it.