Whether you call it a Thigh Holster, Leg Holster, or Drop Leg Holster they all free up belt space and provide extra clearance around body armor to access your pistol. It is also easier to draw from your support hand.
The State Line Tactical Supply Thigh Holster is highly versatile. It is adjustable for ride height, including being able to remove the top strap. Dual tension screw allow you to adjust the force needed to draw.