On your hawk from Crazy Crow, I would only put a few tacks on it if you are going to try thowing it, otherwise you will "unbalance" it, if you add much more. If you are going to just use it for chopping, you can add tacks, rawhide on the handle, and maybe a "drop" like I put on mine. The Pipehawk you can put whatever you want on it cause it is more for looking at, than for using.
I don't like that type of hawk, because the blade fits into a slot "cut" into the handle, and it is not as strong as the more commonly made type. The blade on that one is just pushed into a slot and tied to the handle with rawhide strips. On most tomahawks, the handle goes "through the head" of the hawk, making it stronger.
The knives are not old, the blades were "antiqued" to look old. I don't make knives, I'm a leathercraftsman. My knives are made for me by a friend of mine. All the weapons in my Album are my personal knives, swords, and guns.
I have a question for you. On the photo you showed me of the knife, you have only ground it half way. The Hudson Bay knife is flat ground all the way across the blade. Are you leaving it this way, or are you going to grind it flat?