I'd rather incorporate them into the blade, as it is really the heart and soul of a weapon (the grip/hilt can deteriorate and/or be changed over time, it is the blade that lasts for the life of the sword). I don't mean to incorporate an enormous amount of them into the blade, just enough for sentimental value (his mother would never let me use them all anyway). I imagine that I'd need no more than a pinch or so. Besides, practically trace amounts of calcium carbonate wouldn't hurt, would they?
Another reason for getting the sword custom forged is that I have my own ideas for the design of the weapon. I really want it to be halfway between a Claymore and a bastard sword.