I have always wondered why more people don't bring the holster, and practice drawing from it and handling the weapon with the holster in place. It seems to me, the more comfortable you are drawing the gun from the holster, the better.
That said, I bring the holster, and a range bag. My range bag has my eyes, ears, ammo, mags, and another gun. The bag stays in my trunk during the day, so I am always prepared.