This Knife 11 – Leather handled EDC is a simple design and fairly easy to make. Using leather, rope or paracord for a handle saves a lot of time and can be removed and used for another purpose in a pinch. You will see some survival type knives made like this.
Adding additional holes in the tang helps reduce weight, it gives epoxy additional places to grab when holding the scales in place and may help balance the knife. In this case it adds some grip should the knife be used without the wrap.