The Expedition sheath is a deep pouch style. Generally I make them to cover 2/3 of the handle, though that can be modified to cover up to a lanyard hole or down to about 1/3 of the handle and still hold the knife securely. The design is a wrap around, with lining leather on the welt seam.
The belt hanger is fully adjustable for belt width AND for carry height. As far as I know, this is a unique feature, enabling a thigh dangler or a high belt carry without replacing the sheath. The holes are for screw posts or for cordage to set the adjustments. The belt hanger can also be removed to enable horizontal carry or mounting on pack straps. The straps are stitched on completely independent of the double stitched main welt seam. This makes the straps replaceable due to wear or if you desire a modification.