One problem with carrying pistols with light/laser attachments is finding leather for them. Springtac offers a solution with their U-shaped IWB design.
The leather conforms to the thickness of the pistol. Vertical position of the pistol is controlled by the belt. It stops the grip from moving below the waistline.
The advantage of this design is the ability to go from a Glock with X5L to M1911 with TLR2 with the same holster. The holster can be carried straight or cross-draw for driving. The clip may be switched from side to side, for left or right handed use.